Reductive Amination of Aldehydes and Ketones with Sodium Triacetoxyborohydride. Studies on Direct and Indirect Reductive Amination Procedures<sup>1</sup>
作者:Ahmed F. Abdel-Magid、Kenneth G. Carson、Bruce D. Harris、Cynthia A. Maryanoff、Rekha D. Shah
DOI:10.1021/jo960057x
日期:1996.1.1
triacetoxyborohydride is presented as a general reducing agent for the reductiveamination of aldehydes and ketones. Procedures for using this mild and selective reagent have been developed for a wide variety of substrates. The scope of the reaction includes aliphatic acyclic and cyclic ketones, aliphatic and aromatic aldehydes, and primary and secondary amines including a variety of weakly basic and
Sodium borohydride on wet clay: Solvent-free reductive amination of carbonyl compounds using microwaves
作者:Rajender S. Varma、Rajender Dahiya
DOI:10.1016/s0040-4020(98)00326-3
日期:1998.6
A solvent-free reductive amination of carbonylcompounds by wet montmorillonite K 10 clay supported sodiumborohydride is described; microwave irradiation facilitates the procedure.
4-(Phenylsulfonamidomethyl)benzamides as potent and selective inhibitors of the 11β-hydroxysteroid dehydrogenase type 1 with efficacy in diabetic ob/ob mice
Selectiveinhibitors of 11β-hydroxysteroiddehydrogenasetype1 (11β-HSD1) have considerable potential as treatments for type 2 diabetes. Presented herein are the syntheses, structure–activity relationships, and efficacy evaluation of 4-(phenylsulfonamidomethyl)benzamides as 11β-HSD1 inhibitors. Through modification of our initial lead 5, we have identified potent and selective 11β-HSD1 inhibitors
Aqueous ink composition for use in an ink-jet printer
申请人:SEIKO EPSON CORPORATION
公开号:EP0838508A2
公开(公告)日:1998-04-29
An aqueous ink composition for ink jet printers, which gives reliable printing performance and yields printed images which have excellent print quality and which dry rapidly is disclosed. The ink compositions are suitable for printing on plain paper. The ink comprises water as the principal solvent, an anionic colorant, pectic acid, a base, and at least one of a penetrable solvent and/or a penetrability-imparting surfactant. The pectic acid is composed primarily of α-1,4 linked polygalacturonic acid having a degree of esterification not more than 5% where the degree of esterification is defined as the percentage of the total number of galacturonic acid units in the pectic acid which are esterified.