Acetoxylation of Arylacetonitriles Using (Diacetoxyiodo) Benzene
作者:Evangelia A. Varella、Anastasios Varvoglis
DOI:10.1080/00397919108016779
日期:1991.2
Abstract The direct α-acetoxylation of some arylacetonitriles using (diacetoxyiodo) benzene in the presence of dibenzoyl peroxide provides O-acetylated mandelonitriles in good yields.
TBD- or PS-TBD-Catalyzed One-Pot Synthesis of Cyanohydrin Carbonates and Cyanohydrin Acetates from Carbonyl Compounds
作者:Satoru Matsukawa、Junya Kimura、Miki Yoshioka
DOI:10.3390/molecules21081030
日期:——
Cyanation reactions of carbonylcompounds with methyl cyanoformate or acetyl cyanide catalyzed by 5 mol % of 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) were examined. Using methyl cyanoformate, the corresponding cyanohydrin carbonates were readily obtained in high yield for aromatic and aliphatic aldehydes and ketones. Similar results were obtained when acetyl cyanide was used as the cyanide source.
One-pot three components synthesis of O-acetylcyanohydrins with TMSCN, acetic anhydride and carbonyl compounds under solvent-free condition
作者:Santosh T. Kadam、Sung Soo Kim
DOI:10.1016/j.tet.2009.06.020
日期:2009.8
One-pot three components synthesis of O-acetylcyanohydrins has been developed in the presence of B(C6F5)3 as the catalyst. Variety of aldehydes or ketones reacts with TMSCN and acetic anhydride (Ac2O) under the influence of 1 mol % of B(C6F5)3 to give good to excellent yield of the products without solvent at rt.
在存在B(C 6 F 5)3作为催化剂的情况下,已经开发了O-乙酰基氰醇的一锅三组分合成法。在1摩尔%的B(C 6 F 5)3的影响下,各种醛或酮与TMSCN和乙酸酐(Ac 2 O)反应,从而在室温下在不使用溶剂的情况下获得了良好的优异收率。
IMPROVED THREE-COMPONENT LEWIS ACID-FREE APPROACH FOR THE SYNTHESIS OF PROTECTED RACEMIC CYANOHYDRINS
作者:G. Kumaraswamy、K. Ankamma
DOI:10.1080/00304940809458105
日期:2008.10
A one-pot esterification of chiral O-trimethylsilyl-cyanohydrins with retention of stereochemistry
作者:Stephanie Norsikian、Ian Holmes、Franz Lagasse、Henri B Kagan
DOI:10.1016/s0040-4039(02)01200-5
日期:2002.8
Enantionicrically enriched O-TMS cyanohydrins have been transformed directly into O-acyl-cyanohydrins using various anhydrides or acid chlorides in the presence of catalytic amounts of scandium(III) triflate. The reaction occurs with full retention of stereochemistry and allows the convenient measurement of enantiomeric excesses by chiral HPLC. (C) 2002 Elsevier Science Ltd. All rights reserved.