作者:Amera J. Majeed、Øyvind Antonsen、Tore Benneche、Kjell Undheim
DOI:10.1016/0040-4020(89)80011-0
日期:1989.1
The stannylated pyrimidines form new carbon-carbon bonds by Pd(II)-catalyzed cross-couplings, tert-Butyldimethylsilyl-, dimethylthexylsilyl- and tert-butyldiphenylsilyl-oxymethyl (tri-n-butyl)tin have been synthesized and used in Pd(II)-catalyzed cross-coupling reactions with 4-chloropyrimidines. The silyi groups were not cleaved off during exposure to fluoride ions in aqueous media but were readily removed
嘧啶已通过相应的car☐yyl有机锡酯的热去甲酰基化反应而在活化的4-位上被甲锡烷基化。十烷基化可通过双(乙腈)二氯化钯(II)催化。4- Iodopyrimidines要么4- stannylated通过取代反应与三Ñ -butyltin -铜或通过偶联用六甲基或六正丁基二锡和Pd(II)催化的反应。甲锡基嘧啶通过Pd(II)催化的交叉偶联形成叔碳新的碳-碳键,叔丁基二甲基甲硅烷基-,二甲基甲氧基甲硅烷基-和叔丁基二苯基甲硅烷基-氧甲基(tri- n已经合成了丁基丁基锡,并将其用于Pd(II)催化的与4-氯嘧啶的交叉偶联反应中。在含水介质中暴露于氟离子的过程中,未除去硅烷基,但很容易被THF中的氟离子除去,从而得到4-羟甲基嘧啶。