[EN] CRYSTALLINE SOLID FORM OF (2S-5Z)-2-AMINO-7-(ETHANIMIDOYLAMINO)-2-METHYLHEPT-5-ENOIC ACID<br/>[FR] FORME CRISTALLINE SOLIDE DE L'ACIDE (2S-5Z)-2-AMINO-7-(ETHANIMIDOYLAMINO)-2-METHYLHEPT-5-ENOIQUE
申请人:PHARMACIA CORP
公开号:WO2004018412A1
公开(公告)日:2004-03-04
(2S,5Z)-2-amino-7-(ethanimidoylamino)-2-methylhept-5-enoic acid is crystallized as an anhydrous, stoichiometric 1.5 HCl salt and a scaleable crystallization method is disclosed. The salt form was characterized and the absolute configuration of the chiral center was confirmed as 'S'. (2S,5Z)-2-amino-7-(ethanimidoylamino)-2-methylhept-5enoic acid was high melting and appears acceptably non-hygroscopic for use in a pharmaceutical composition.
Catalytic S<sub>N</sub>2′-Selective Substitution of Allylic Chlorides With Arylboronic Esters
作者:Aaron M. Whittaker、Richard P. Rucker、Gojko Lalic
DOI:10.1021/ol101171v
日期:2010.7.16
A copper-catalyzed SN2′-selective arylation of allylicchlorides has been achieved using arylboronic esters as nucleophiles. Arylation products were obtained in high yield with a variety of allylicchlorides and arylboronic esters in the presence of a wide range of functional groups. A mechanism is proposed on the basis of the results of stoichiometric experiments and the isolation of the proposed
使用芳基硼酸酯作为亲核试剂,已经实现了铜催化的烯丙基氯化物的S N 2'选择性芳基化。在各种官能团存在的情况下,可以使用多种烯丙基氯化物和芳基硼酸酯以高收率获得丙烯酸化产物。根据化学计量的实验结果和所提出的中间体的分离,提出了一种机理。