Sulfamates of the following formula (I) are anticonvulsants and are useful in the treatment of epilepsy: ##STR1## wherein R is one or more substituents such as alkyl, halo, alkoxy, CH.sub.3 or nitro; and x is 0-3.
Enantioselective intramolecular amidation of sulfamate esters catalyzed by chiral manganese(III) Schiff-base complexes
作者:Ji Zhang、Philip Wai Hong Chan、Chi-Ming Che
DOI:10.1016/j.tetlet.2005.05.146
日期:2005.8
Enantioselective intramolecularamidation of sulfamate esters catalyzed by chiral manganese(III) Schiff-base complexes under mild conditions (PhI(OAc)2, Al2O3, C6H6, 5 °C) was achieved in moderate to good yields (up to 92%), substrate conversions (up to 99%), with virtually complete cis-selectivity and with ee values up to 79% ee.
通过温和的条件下的手性锰(III)的席夫碱配合物催化的氨基磺酸酯的对映选择性的分子内酰胺化(PHI(OAC)2,AL 2 ö 3,C 6 H ^ 6,5℃)在中度至良好的产率达到(最多至92%),底物转化率(高达99%),几乎完全的顺式选择性和ee值高达ee的79%。
Highly Diastereo- and Enantioselective Intramolecular Amidation of Saturated CH Bonds Catalyzed by Ruthenium Porphyrins
作者:Jiang-Lin Liang、Shi-Xue Yuan、Jie-Sheng Huang、Wing-Yiu Yu、Chi-Ming Che