A generalized approach for iron catalyzed chemo- and regioselective formation of anti-Markovnikov acetals from styrene derivatives
作者:Abhishek Dutta Chowdhury、Goutam Kumar Lahiri
DOI:10.1039/c2cc17889c
日期:——
in the presence of pyridine-2,6-dicarboxylic acid and PhI(OAc)(2) can efficiently catalyze the formation of chemoselective dialkyl acetals from styrene derivatives with anti-Markovnikovregioselectivity in good to high yields under mild and benign reaction conditions.
Hypoiodous acid-catalyzed regioselective geminal addition of methanol to vinylarenes: synthesis of anti-Markovnikov methyl acetals
作者:Swamy Peraka、Naresh Mameda、Mahender Reddy Marri、Srujana Kodumuri、Durgaiah Chevella、Prabhakar Sripadi、Narender Nama
DOI:10.1039/c5ra16826k
日期:——
salt and oxone is reported. The preliminary mechanistic investigations suggest that the key factor for achieving the anti-Markovnikov regioselectivity is the semipinacol rearrangement of an iodo functionalized intermediate, which is confirmed by an isotope labeling experiment. In addition, the reaction involves the de-iodination of a co-iodo intermediate via its oxidation to hypervalent iodine species