N-methylation of sulfoximines using methylboronic acid is reported. The reactions provide excellent yields in a short span of time under mild conditions. The optimized conditions were also found to be suitable for the N-alkylation of sulfoximine with different alkylboronic acids. In addition, N-methylation and cyclopropylation of the bioactive L-methionine sulfoximine derivative was demonstrated under standard
Direct Access to N-Alkylsulfoximines from Sulfides by a Sequential Imidation/Oxidation Procedure
作者:Vincent Bizet、Carsten Bolm、Carl Dannenberg
DOI:10.1055/s-0034-1380536
日期:——
Synthetically relevant N-alkyl-substituted sulfoximines are directly prepared from sulfides by an unprecedented one-pot imidation/oxidation sequence. In situ generated N-bromoalkylamines serve as readily accessible imidating agents leading to N-alkylsulfiliminium bromides that are subsequently oxidized providing the corresponding N-alkylsulfoximines. In this manner, gram quantities of the products can be obtained in a short period of time avoiding the use of toxic and cumbersome to handle alkylating reagents.
Stereochemistry of sulfur compounds. II. New reactions at chiral sulfur that complete the first monoligostatic stereochemical reaction cycle
作者:Todd R. Williams、Abraham Nudelman、Robert E. Booms、Donald J. Cram
DOI:10.1021/ja00768a041
日期:1972.6
Raguse, Burkhard; Ridley, Damon D., Australian Journal of Chemistry, 1986, vol. 39, # 10, p. 1655 - 1659
作者:Raguse, Burkhard、Ridley, Damon D.
DOI:——
日期:——
Kielbasinski, Polish Journal of Chemistry, 1999, vol. 73, # 4, p. 735 - 738