photoinduced acylation of N‐heterocycles is explored. This visible‐lighttriggered reaction occurs not only under extremely mild reaction conditions, but also does not require the presence of a photosensitizer. The mechanistic studies suggest formation of EDA complexes prompt to harness the energy from visible‐light. Compatibility with a large panel of α‐keto acids as acyl precursors and an array of N‐heterocycles
The reactions of acylformyl chlorides with 2- and 4-trimethylstannylpyrimidine derivatives proceeded more smoothly than those of acyl chlorides giving the corresponding 2- and 4-acylpyrimidines. Employing ethyl chlorogly-oxylate in stead of the acylating agent yielded the ethoxycarbonylpyrimidines. Similarly, the stepwise acylation and ethoxycarbonylation of bis(trimethylstannyl)-pyrimidines provided pyrimidines having two different carbon functional groups.
US4477635A
申请人:——
公开号:US4477635A
公开(公告)日:1984-10-16
Heteroarylierungen mit quart�rsubstituierten Pyrimidinsalzen
作者:W. Kl�tzer
DOI:10.1007/bf00917846
日期:——
Oxidative Ring Opening of 2-Oxoisoxazolo[2,3-<i>a</i>]pyrimidines. Formation of Pyrimidin-2-yl Phenyl Ketones