Diastereoselective Bromocyclization of O-Allyl-N-tosyl-hydroxylamines
摘要:
The intramolecular bromoamination of O-allyl-N-tosyl-hydroxylamines results in the formation of isoxazolidines via selective 5-endo-tet cyclization. This process occurs trans-selectively in high yield and diastereoselectivity. The obtained bromo-isoxazolidines provide access to other useful building blocks, such as 2-azido-aminoalcohols, diaminoalcohols, and aziridines.
Diastereoselective Bromocyclization of O-Allyl-N-tosyl-hydroxylamines
摘要:
The intramolecular bromoamination of O-allyl-N-tosyl-hydroxylamines results in the formation of isoxazolidines via selective 5-endo-tet cyclization. This process occurs trans-selectively in high yield and diastereoselectivity. The obtained bromo-isoxazolidines provide access to other useful building blocks, such as 2-azido-aminoalcohols, diaminoalcohols, and aziridines.
Diastereoselective Bromocyclization of <i>O</i>-Allyl-<i>N</i>-tosyl-hydroxylamines
作者:Boris Egart、Dieter Lentz、Constantin Czekelius
DOI:10.1021/jo3026725
日期:2013.3.15
The intramolecular bromoamination of O-allyl-N-tosyl-hydroxylamines results in the formation of isoxazolidines via selective 5-endo-tet cyclization. This process occurs trans-selectively in high yield and diastereoselectivity. The obtained bromo-isoxazolidines provide access to other useful building blocks, such as 2-azido-aminoalcohols, diaminoalcohols, and aziridines.