Synthesis and Reaction of Some 2-Alkylene-1,3-oxazolidines
摘要:
Starting from 1,3-oxazoline 6 synthesis of ketene-O,N-acetals 2b, 2c is described via NBS bromination and HBr elimination.The N-sulfonyl-oxazolidines 10, 11 are synthesized by cyclization starting from aminoalcohol7, 10d react with potassium t-butoxide to the oxazolidine 2d; 11d gives under the some conditions the ring opening product 12d, compound 10a is inert.
In situ generated osmium-diamine chelates from 2,3-diaminopropionic acid or diaminosuccinic acid represent efficient catalysts for the highly productive aminohydroxylation of alkenes. The reaction can be employed with various osmium salts and successful catalyst recycling was demonstrated for a representative example. The catalyst design derives from the general structural features of recently investigated
Synthesis and Reaction of Some 2-Alkylene-1,3-oxazolidines
作者:S. Fernandez、E. Klemm
DOI:10.1002/prac.19983400213
日期:——
Starting from 1,3-oxazoline 6 synthesis of ketene-O,N-acetals 2b, 2c is described via NBS bromination and HBr elimination.The N-sulfonyl-oxazolidines 10, 11 are synthesized by cyclization starting from aminoalcohol7, 10d react with potassium t-butoxide to the oxazolidine 2d; 11d gives under the some conditions the ring opening product 12d, compound 10a is inert.