Titanocene(II)-Promoted Olefination of ω,ω-Bis(phenylthio)alkyl Alkanoates. A New Method for the Preparation of ω-Hydroxy Ketones
摘要:
Intramolecular olefination of esters having a thioacetal moiety was studied. The treatment of omega,omega-bis(phenylthio)alkyl alkanoates with Cp2Ti[P(OEt)(3)](2) and the following hydrolysis gave omega-hydroxy ketones in good yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
Cellular accumulation of phosphonate analogs of hiv protease inhibitor compounds
申请人:Arimilli N. Murty
公开号:US20070010489A1
公开(公告)日:2007-01-11
Phosphonate substituted compounds with HIV protease inhibitory properties having use as therapeutics and for other industrial purposes are disclosed. The compositions inhibit 5 HIV protease activity and/or are useful therapeutically for the treatment of AIDS and other antiviral infections, as well as in assays for the detection of HIV protease.
Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by Samarium(II) Iodide: A Convergent Approach to the Preparation of Enantiomerically Enriched 4-Hydroxy Ketones from 3-Iodopropyl Carboxylates
作者:Gary A. Molander、Sagar R. Shakya
DOI:10.1021/jo00091a039
日期:1994.6
Intramolecular nucleophilic acylsubstitution (INAS) reactions of substituted 3-iodopropyl carboxylates have been achieved using samarium(II) iodide (SmI2) in the presence of an iron(III) catalyst. Diverse ester starting materials containing stereogenic centers placed in varying positions on the substrates have been converted to acyclic 4-hydroxy ketone derivatives in good yields using this method. No racemization of stereogenic centers alpha to the carbonyl was observed in any of the reactions examined. Consequently, the method serves as a convenient, high-yield synthesis of functionalized, enantiomerically enriched acyclic ketones possessing stereogenic centers far removed from one another.
US7649015B2
申请人:——
公开号:US7649015B2
公开(公告)日:2010-01-19
Sulfonium ion-promoted traceless Schmidt reaction of alkyl azides
Schmidt reaction by sulfonium ions is described. General primary, secondary, and tertiary alkyl azides were converted to the corresponding carbonyl or imine compounds without any trace of the activators. This bond scission reaction through 1,2-migration of C–H and C–C bonds was accessible to the one-pot substitution reaction.
Titanocene(II)-Promoted Olefination of ω,ω-Bis(phenylthio)alkyl Alkanoates. A New Method for the Preparation of ω-Hydroxy Ketones
作者:Md.Abdur Rahim、Tooru Fujiwara、Takeshi Takeda
DOI:10.1016/s0040-4020(99)01091-1
日期:2000.1
Intramolecular olefination of esters having a thioacetal moiety was studied. The treatment of omega,omega-bis(phenylthio)alkyl alkanoates with Cp2Ti[P(OEt)(3)](2) and the following hydrolysis gave omega-hydroxy ketones in good yields. (C) 2000 Elsevier Science Ltd. All rights reserved.