Acid-or base-promoted photostimulated homolytic tert-butylation of pyridines and thiophenes

BH Kim, I Jeon, TH Han, HJ Park…

Index: Kim; Jeon; Han; Park; Jun Journal of the Chemical Society. Perkin Transactions 1, 2001 , # 17 p. 2035 - 2039

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Citation Number: 8

Abstract

Regioselective photostimulated homolytic tert-butylations for heteroaromatics such as pyridines or thiophenes are investigated with tert-butylmercury (II) chloride in the presence of toluene-p-sulfonic acid (PTSA) or 1, 4-diazabicyclo [2.2. 2] octane (DABCO) respectively. While the promotion effect of acid is quite strong for basic pyridines, the acid does not promote the reaction effectively for non-basic thiophenes. On the other hand, pyridines ...