Reinvestigation of the Mechanism ofgem-Diacylation: Chemoselective Conversion of Aldehydes to Variousgem-Diacylates and Their Cleavage under Acidic and Basic Conditions
作者:Veerababurao Kavala、Bhisma�K. Patel
DOI:10.1002/ejoc.200400584
日期:2005.1
aromatic aldehydes were obtained directly from the reaction of a variety of aliphatic and aromatic acid anhydrides in the presence of a catalytic quantity of tetrabutylammonium tribromide (TBATB) under solvent-free conditions. A significant electronic effect was observed during its formation as well as deprotection to the corresponding aldehyde. Chemoselective gem-diacylation of the aromatic aldehyde containing
Lithium Chloride–Assisted Chemoselective Conversion of Aldehydes into Geminal Diacetates Under Solvent‐Free Conditions
作者:J. W. John Bosco、N. Purkayastha、B. Rama Raju、Anil K. Saikia
DOI:10.1081/scc-200057238
日期:2005.5.1
A mixture of lithium chloride and acetic anhydride was used for converting aldehydes into geminal diacetates under solvent-free conditions in high yields.
US4233230A
申请人:——
公开号:US4233230A
公开(公告)日:1980-11-11
Cerium(IV) Triflate‐Catalyzed Selective <i>Gem</i>‐diacetylation of Aldehydes with Acetic Anhydride
作者:J. W. John Bosco、Anil K. Saikia
DOI:10.1080/00397910701649106
日期:2007.12.1
Abstract It has been observed that a catalytic amount (0.1 mol%) of cerium(IV) triflate afforded geminal diacetates from aldehydes with acetic anhydride in toluene at ambient temperature. Ketones are not affected under these reaction conditions. The reaction is rapid and mild with good to high yields.