Acceleration of Petasis reactions of salicylaldehyde derivatives with molecular sieves

Autor: William F. Kiesman, Tina Talreja, Michael Humora, Hairuo Peng, Xianglin Shi, Dominique Hebrault, Zhili Xin, Zezhou Wang
Rok vydání: 2011
Předmět:
Zdroj: The Journal of organic chemistry. 77(2)
ISSN: 1520-6904
Popis: Mild reaction conditions for Petasis reactions of substituted salicylaldehydes with various amines and arylboronic acids in the presence of molecular sieves were developed. Molecular sieves (MS) significantly accelerated the reaction rates and drove the reactions to high conversions. The conditions were applied to the synthesis of the core structure of BIIB042, a γ-secretase modulator, without stereochemical erosion of a stereogenic center in the salicylaldehyde intermediate.
Databáze: OpenAIRE