4-Quinolylmethyl and 1-Naphthylmethyl as Benzyl-type Protecting Groups of Carboxylic Acids Removable by Homogeneous Palladium-Catalyzed Hydrogenolysis
作者:André Boutros、Jean-Yves Legros、Jean-Claude Fiaud
DOI:10.1016/s0040-4020(99)01108-4
日期:2000.4
4-Quinolylmethyl (4-QUI) esters are reduced by palladium-catalyzed hydrogenolysis by formate anion. The reaction conditions are compatible with reducible substituents or functional groups as aromatic bromo, alkene, aldehyde, ketone, nitrile, ethyl and benzyl esters. An allyl ester is cleaved selectively in the presence of a 4-QUI ester. 1-Naphthylmethyl (1-NAP) esters of α-amino acids could be deprotected
通过钯催化的甲酸根阴离子的氢解作用,可以还原4-喹啉基甲基(4-QUI)酯。反应条件与可还原的取代基或官能团如芳族溴,烯烃,醛,酮,腈,乙酯和苄酯相容。在4-QUI酯的存在下,烯丙基酯被选择性地裂解。α-氨基酸的1-萘甲基(1-NAP)酯可以通过相同的方法脱保护而无需消旋。