Br/Mg-exchange reaction using reagents of the general formula R2Mg (R = sBu, Mes). Highly sensitive functional groups, such as triazene or nitro, are tolerated in these exchange reactions, enabling the synthesis of various functionalized (hetero)arene and alkene derivatives after quenching with several electrophiles including allyl bromides, acylchlorides, aldehydes, ketones, and aryl iodides.
在 –78 °C 和 25 °C 之间,通过 I/Mg 或 Br/Mg 交换反应,在甲苯中,在 10 到 120 分钟内,使用以下试剂制备各种多官能化二(杂)芳基和二烯基镁试剂通式 R2Mg (R = sBu, Mes)。在这些交换反应中可以耐受三氮烯或硝基等高度敏感的官能团,在用烯丙基溴、酰氯、醛、酮和芳基碘等多种亲电试剂淬灭后,可以合成各种功能化的(杂)芳烃和烯烃衍生物.
Synergistic herbicidal compositions and methods of use
申请人:STAUFFER CHEMICAL COMPANY
公开号:EP0219143A1
公开(公告)日:1987-04-22
A synergistic herbicidal composition comprising a mixture of
(a) an herbicidally effective amount of a thiolcarbamate of the formula
in which
X is hydrogen, chlorine or bromine; and
R¹ and R² are independently selected from the group consisting of C₁-C₆ alkyl and C₅-C₇ cycloalkyl, and
(b) an herbicidally effective amount of a benzonitrile of the formula
wherein Y is halogen and Z is selected from the group consisting of hydrogen or halogen, or their modified hydroxy equivalents.
一种增效除草组合物,由以下物质的混合物组成
(a) 除草有效量的硫醇氨基甲酸酯混合物,其式如下
其中
X 是氢、氯或溴;和
R¹ 和 R² 独立地选自由 C₁-C₆ 烷基和 C₅-C₇ 环烷基组成的组,以及
(b) 除草有效量的式中苯腈
其中 Y 为卤素,Z 选自由氢或卤素或它们的改性羟基等效物组成的组。
Construction of Peptide Macrocycles via Palladium-Catalyzed Multiple S-Arylation: An Effective Strategy to Expand the Structural Diversity of Cross-Linkers