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N-Phenethyl-4-piperidinone
''N''-Phenethyl-4-piperidinone (NPP) is a derivative of 4-piperidinone with the molecular formula C13H17NO. It is used as an intermediate in the manufacture of chemicals and pharmaceutical drugs such as fentanyl. Because of its possible use in the illicit manufacture of fentanyl, NPP was placed under control as a List 1 Chemical in 2007. Both domestic sales and domestic importations are thus subject to DEA reporting requirements. Preparation ''N''-Phenethyl-4-piperidinone can be prepared from 4-piperidinone and phenethyl bromide in biphasic conditions with a variety of phase transfer catalysts. Uses ''N''-Phenethyl-4-piperidinone is useful in the synthesis of pharmaceuticals, primarily fentanyl and its analogs. Paul Janssen (founder of Janssen Pharmaceutica) first synthesized fentanyl in 1960 from Benzylfentanyl. The Seigfried method (shown below and published on The Hive) involves reacting ''N''-phenethyl-4-piperidinone with aniline, and then reducing the imine produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NPP To Fentanyl
NPP may refer to: Politics *National People's Power, Sri Lanka *National Patriotic Party, Liberia *National People's Party (The Gambia) * National People's Party (India), a political party in India founded by PA Sangma *National Peoples Party (Pakistan), a regional political party in Pakistan *National People's Party (South Africa), a mostly-regional political party in South Africa *National Progress Party of Armenia, Armenia *National Progressive Party (Finland) *New Patriotic Party, Ghana * New People's Party (Hong Kong) *New Power Party, Taiwan *New Progressive Party of Puerto Rico *New Progressive Party (South Korea) *Northern People's Party, Ghana Science *Suomi NPP (Suomi National Polar orbiting Partnership), an American weather satellite * Net Primary Productivity *Nobel Prize in Physics *Normal probability plot * N-Phenethyl-4-piperidinone * N-Terminal peptide of proopiomelanocortin * Nucleotide pyrophosphatase/phosphodiesterase * para-Nitrophenylphosphate Other * New P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4-ANPP
4-ANPP, also known as 4-anilino-''N''-phenethylpiperidine (4-ANPP), 4-aminophenyl-1-phenethylpiperidine, or despropionyl fentanyl, is a direct precursor to fentanyl and some fentanyl analogues such as acetylfentanyl. It is commonly found as a contaminant in samples of drugs containing fentanyl, which may include samples represented by the supplier as heroin or other opioids. It is not psychoactive and is present only as a result of improper processing of the intended product of the synthesis. Preparation 4-ANPP can be prepared from ''N''-phenethyl-4-piperidinone (NPP) and aniline, then being reduced. 4-ANPP can also be prepared using 4-anilinopiperidine and selectively adding the phenethyl group. Uses 4-ANPP is useful in the synthesis of pharmaceuticals, primarily fentanyl and its analogs. Paul Janssen (founder of Janssen Pharmaceutica) first synthesized fentanyl in 1960 using 4-ANPP as an intermediate. Janssen's synthesis involved reacting ''N''-phenethyl-4-piperidinone (NPP ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4-Piperidinone
4-Piperidinone is a derivative of piperidine with the molecular formula C5 H9 N O. 4-Piperidone is used as an intermediate in the manufacture of chemicals and pharmaceutical drugs. Piperidones Piperidones are a class of chemical compounds sharing the piperidone skeleton. A classic named reaction for the synthesis of piperidones is the Petrenko-Kritschenko piperidone synthesis which involves combining an alkyl-1,3-acetonedicarboxylate with benzaldehyde and an amine. This multicomponent reaction is related to the Hantzsch pyridine synthesis The Hantzsch pyridine synthesis or Hantzsch dihydropyridine synthesis is a multi-component organic reaction between an aldehyde such as formaldehyde, 2 equivalents of a β-keto ester such as ethyl acetoacetate and a nitrogen donor such as ammoni .... See also * 4-Pyridone References {{heterocyclic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzylfentanyl
Benzylfentanyl (R-4129) is a fentanyl analog. It was temporarily placed in the US Schedule I by emergency scheduling in 1985 due to concerns about its potential for abuse as a designer drug, but this placement was allowed to expire and benzylfentanyl was formally removed from controlled substance listing in 2010, after the DEA's testing determined it to be "essentially inactive" as an opioid. Benzylfentanyl has a Ki of 213 nM at the mu opioid receptor, binding around 1/200 as strong as fentanyl itself, though it is still slightly more potent than codeine. Side effects of fentanyl analogs are similar to those of fentanyl itself, which include itching, nausea, and potentially serious respiratory depression which can be life-threatening. Fentanyl analogs have killed hundreds of people throughout Europe and the former Soviet republics since the most recent resurgence in use began in Estonia in the early 2000s, and novel derivatives continue to appear. Legal status In the United S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piperidines
Piperidine is an organic compound with the molecular formula (CH2)5NH. This heterocyclic amine consists of a six-membered ring containing five methylene bridges (–CH2–) and one amine bridge (–NH–). It is a colorless liquid with an odor described as objectionable, and typical of amines. The name comes from the genus name '' Piper'', which is the Latin word for pepper. Although piperidine is a common organic compound, it is best known as a representative structure element within many pharmaceuticals and alkaloids, such as natural-occurring solenopsins. Production Piperidine was first reported in 1850 by the Scottish chemist Thomas Anderson and again, independently, in 1852 by the French chemist Auguste Cahours, who named it. Both of them obtained piperidine by reacting piperine with nitric acid. Industrially, piperidine is produced by the hydrogenation of pyridine, usually over a molybdenum disulfide catalyst: : C5H5N + 3 H2 → C5H10NH Pyridine can also be redu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ketones
In organic chemistry, a ketone is a functional group with the structure R–C(=O)–R', where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group –C(=O)– (which contains a carbon-oxygen double bond C=O). The simplest ketone is acetone (where R and R' is methyl), with the formula . Many ketones are of great importance in biology and in industry. Examples include many sugars ( ketoses), many steroids (e.g., testosterone), and the solvent acetone. Nomenclature and etymology The word ''ketone'' is derived from ''Aketon'', an old German word for ''acetone''. According to the rules of IUPAC nomenclature, ketone names are derived by changing the suffix ''-ane'' of the parent alkane to ''-anone''. Typically, the position of the carbonyl group is denoted by a number, but traditional nonsystematic names are still generally used for the most important ketones, for example acetone and benzophenone. These nonsystematic names are considered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sodium Borohydride
Sodium borohydride, also known as sodium tetrahydridoborate and sodium tetrahydroborate, is an inorganic compound with the formula Na BH4. This white solid, usually encountered as an aqueous basic solution, is a reducing agent that finds application in papermaking and dye industries. It is also used as a reagent in organic synthesis. The compound was discovered in the 1940s by H. I. Schlesinger, who led a team seeking volatile uranium compounds.Hermann I Schlesinger and Herbert C Brown (1945)Preparation of alkali metal compounds. US Patent 2461661. Granted on 1949-02-15; expired on 1966-02-15. Results of this wartime research were declassified and published in 1953. Properties The compound is soluble in alcohols, certain ethers, and water, although it slowly hydrolyzes. Sodium borohydride is an odorless white to gray-white microcrystalline powder that often forms lumps. It can be purified by recrystallization from warm (50 °C) diglyme. Sodium borohydride is soluble in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Hive (website)
The Hive was a website that served as an information-sharing forum for individuals and groups interested in the practical synthesis, chemistry, biology, politics, and legal aspects of mind or body-altering drugs. Participants ranged from pure theorists to self-declared organized crime chemists (claimed to be retired but with excellent connections) as well as forensic chemists, who (much like their quarries) used the Hive to keep abreast of developments in clandestine chemistry. At its peak, the Hive had thousands of participants from all over the world. History Although it had been in operation since 1997, The Hive gained broader awareness in 2001 when a Dateline NBC special ''The "X" Files'' aired. This investigation into the use and production of MDMA featured the Hive and its founder, who operated under the pseudonym 'Strike' ( Hobart Huson). Strike was the founder and site designer of the Hive as well as the author of several popular books (''Total Synthesis I'' and ''II' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical & Engineering News
''Chemical & Engineering News'' (''C&EN'') is a weekly news magazine published by the American Chemical Society, providing professional and technical news and analysis in the fields of chemistry and chemical engineering.C&EN Magazine Website Chemical and Engineering News, October 12, 2009, accessed October 12, 2009 It includes information on recent news and research in these fields, career and employment information, business and industry news, government and policy news, funding in these fields, and special reports. The magazine is available to all members of the American Chemical Society. History The magazine was established in 1923,C&EN- Happy Birthday to Us, accessed O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Janssen Pharmaceutica
Janssen Pharmaceuticals is a pharmaceutical company headquartered in Beerse, Belgium, and wholly-owned by Johnson & Johnson. It was founded in 1953 by Paul Janssen. In 1961, Janssen Pharmaceuticals was purchased by New Jersey-based American corporation Johnson & Johnson, and became part of Johnson & Johnson Pharmaceutical Research and Development (J&J PRD), now renamed to Janssen Research and Development (JRD), which conducts research and development activities related to a wide range of human medical disorders, including mental illness, neurological disorders, anesthesia and analgesia, gastrointestinal disorders, fungal infection, HIV/AIDS, allergies and cancer. Janssen and Ortho-McNeil Pharmaceutical have been placed in the Ortho-McNeil-Janssen group within Johnson & Johnson Company. Subsidiaries * Actelion * Cilag AG * Janssen Biotech (formerly ''Centocor'') * Janssen Vaccines (formerly ''Crucell'') * Tibotec * Beijing Dabao Cosmetics Co., Ltd. History The early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Formula
In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and ''plus'' (+) and ''minus'' (−) signs. These are limited to a single typographic line of symbols, which may include subscripts and superscripts. A chemical formula is not a chemical name, and it contains no words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula. Chemical formulae can fully specify the structure of only the simplest of molecules and chemical substances, and are generally more limited in power than chemical names and structural formulae. The simplest types of chemical formulae are called ''empirical formulae'', which use letters and numbers indicating the numerical ''proportions'' of atoms of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Janssen
Paul Adriaan Jan, Baron Janssen (12 September 1926 - 11 November 2003) was a Belgian physician. He was the founder of Janssen Pharmaceutica, a pharmaceutical company with over 20,000 employees which is now a subsidiary of Johnson & Johnson. Early life and education Paul Janssen was the son of Constant Janssen and Margriet Fleerackers. He attended secondary school at the Jesuit St Jozef college in Turnhout, Belgium after which he decided to follow in his father's footsteps and become a physician. During World War II Janssen studied physics, biology and chemistry at the Facultés universitaires Notre-Dame de la Paix (FUNDP) in Namur. He then studied medicine at the Catholic University of Leuven and Ghent University. In 1951, Janssen received his medical degree ''magna cum laude'' from Ghent University. He graduated with a postdoctoral degree in pharmacology at the same university in 1956, and studied at the Institute of Pharmacology of the University of Cologne. On 16 April 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
