One-pot synthesis of ω-bromoesters from aromatic aldehydes and diols using pyridinium hydrobromide perbromide
摘要:
A simple and efficient one-pot procedure has been developed for the synthesis of omega-bromoesters from aromatic aldehydes and diols in the presence of pyridinium hydrobromide perbromide (PHPB) and triethoxymethane in which aldehyde reacts first with diol and the product, cyclic acetal, reacts with PHPB to give the filial product, omega-bromoesters. (C) 2005 Elsevier Ltd. All rights reserved.
Preparation of mono-substituted malonic acid half oxyesters (SMAHOs)
作者:Tania Xavier、Sylvie Condon、Christophe Pichon、Erwan Le Gall、Marc Presset
DOI:10.3762/bjoc.17.135
日期:——
The use of mono-substituted malonic acid half oxyesters (SMAHOs) has been hampered by the sporadic references describing their preparation. An evaluation of different approaches has been achieved, allowing to define the best strategies to introduce diversity on both the malonic position and the ester function. A classical alkylation step of a malonate by an alkyl halide followed by a monosaponification
A New Synthetic Method for Haloalkyl Carboxylic Esters from the Radical Ring Cleavage of Cyclic Acetals with Haloform
作者:Lin Hai-xia、Xu Liang-heng、Huang Nai-ju
DOI:10.1080/00397919708005032
日期:1997.1
Abstract A one-pot reaction of cyclicacetals with haloform catalyzed by AIBN(2,2′-azobisisobutyronitrile) provides a novel convenient way to prepare directly haloalkyl carboxylic esters in good yields.