Building Heterocyclic Systems with RC(OR)2+ Carbocations in Recyclable Brønsted Acidic Ionic Liquids: Facile Synthesis of 1-Substituted 1H-1,2,3,4-Tetrazoles, Benzazoles and Other Ring Systems with CH(OEt)3 and EtC(OEt)3 in [EtNH3][NO3] and [PMIM(SO3H)][O
作者:Gopalakrishnan Aridoss、Kenneth K. Laali
DOI:10.1002/ejoc.201100128
日期:2011.5
IL-1/CH(OEt) 3 . The latter was also formed from 2-aminobenzoic acid in IL-1/CH(OEt) 3 . Mechanistic implications are addressed. The reported protocols enable rapid assembly of a host of heterocyclic systems in high yields with the added advantage of recycling and reuse of the ILs.
The anchoring of a Cu(<scp>ii</scp>)–salophen complex on magnetic mesoporous cellulose nanofibers: green synthesis and an investigation of its catalytic role in tetrazole reactions through a facile one-pot route
作者:Pouya Ghamari kargar、Ghodsieh Bagherzade
DOI:10.1039/d1ra01913a
日期:——
methods are aimed at carrying out reactions under more efficient conditions and the realization of the twelve principles of green chemistry. Due to the importance and widespread applications of tetrazoles in various industries, especially in the field of pharmaceutical chemistry, and the expansion of the use of nanocatalysts in the preparation of valuable chemical reaction products, we decided to use an
[EN] NOVEL E,E-DIENE COMPOUNDS AND THEIR USE AS MEDICAMENTS AND COSMETICS<br/>[FR] NOUVEAUX COMPOSÉS E,E-DIÉNIQUES ET LEUR UTILISATION COMME MÉDICAMENTS ET PRODUITS COSMÉTIQUES
申请人:WOLFF AUGUST GMBH & CO KG ARZNEIMITTEL DR
公开号:WO2012069605A1
公开(公告)日:2012-05-31
The present invention relates to a novel class of E,E-diene compounds and their use as a medicament, preferably as a dermatologic agent, and as a cosmetic. These novel compounds are particularly useful in treating and/or preventing inflammation, irritation, itching, pruritus, pain, oedema and/or pro-allergic or allergic conditions in a patient. Usually they are topically applied to the skin or mucosa in the form of a pharmaceutical or cosmetic composition comprising the compound and a pharmaceutically and/or cosmetically acceptable carrier.
A direct synthetic protocol is developed for the synthesis of 1-substituted-1H-1,2,3,4-tetrazoles via a three-component condensation of primaryamines, triethyl orthoformate and sodium azide in the presence of 5 mol% of trifluoromethanesulfonimide (HNTf2) in glycerol at room temperature with good to excellent yields.
ALKOXYTETRAZOL-1-YLBENZALDEHYDE COMPOUND AND PROCESS FOR PRODUCING THE SAME
申请人:TOYO KASEI KOGYO COMPANY LIMITED
公开号:EP1650198A1
公开(公告)日:2006-04-26
The present invention relates to a process for producing an alkoxy-(tetrazol-1-yl)benzaldehyde compound represented by Formula (2):
wherein A1 is an alkoxy group, and A2 is a hydrogen atom, alkyl group or fluorine-substituted alkyl group, the process comprising reacting a 1-(alkoxyphenyl)-1H-tetrazole compound represented by Formula (1):
wherein A1 and A2 are as defined above, with hexamethylenetetramine in a sulfonic acid solvent, followed by hydrolysis. According to the present invention, an alkoxy-(tetrazol-1-yl)benzaldehyde compound can be safely and efficiently produced by formylating a 1-(alkoxyphenyl)-1H-tetrazole compound.