New Hindered Amide Base for Aryne Insertion into Si–P, Si–S, Si–N, and C–C Bonds
作者:Milad Mesgar、Justin Nguyen-Le、Olafs Daugulis
DOI:10.1021/jacs.8b07064
日期:2018.10.24
general method for a new, hindered lithium diadamantylamide (LDAM) base-promoted insertion of arynes into Si-P, Si-S, Si-N, and C-C bonds is described. Arynes are generated from easily available aryl triflates and halides. Subsequent reaction of the aryne with silylated phosphines, sulfides, or amines affords the insertion products. Furthermore, a one-step synthesis of anthracenes from aryl halides and
描述了一种新的受阻锂二金刚胺 (LDAM) 碱促进芳炔插入 Si-P、Si-S、Si-N 和 CC 键的一般方法。芳烃是由容易获得的芳基三氟甲磺酸酯和卤化物生成的。芳炔与甲硅烷基化膦、硫化物或胺的后续反应提供插入产物。此外,还证明了从芳基卤化物和芳基酮一步合成蒽。氰基、芳基、烷基、三氟甲基、乙烯基、甲氧基、氯、氟甚至甲酰基部分与反应条件相容。与四甲基哌啶锂 (LiTMP) 促进的反应相比,新的氨基化锂提供了更高的产率。此外,LDAM 碱的庞大性基本上抑制了芳炔与碱的反应,允许使用芳基卤化物和三氟甲磺酸酯作为限制试剂。
Nickel-Catalyzed Reductive Cross-Coupling of Aryl Triflates and Nonaflates with Alkyl Iodides
作者:Yuto Sumida、Takamitsu Hosoya、Tomoe Sumida
DOI:10.1055/s-0036-1588464
日期:2017.8
coupling of aryl triflates and nonaflates with alkyliodides using manganese(0) as a reductant is described. The method is applicable to the reductive alkylation of various aryl sulfonates, including o-borylaryl triflate, which enabled efficient construction of diverse alkylated arenes under mild conditions. A nickel-catalyzed cross-electrophile coupling of aryl triflates and nonaflates with alkyl iodides
Factors Affecting the Oxidative Addition of Aryl Electrophiles to 1,1‘-Bis(diphenylphosphino)ferrocenepalladium(η<sup>2</sup>-methyl acrylate), an Isolable Pd[0] Alkene Complex
作者:Anny Jutand、King Kuok (Mimi) Hii、Mark Thornton-Pett、John M. Brown
DOI:10.1021/om9906417
日期:1999.12.1
It undergoes oxidative addition with aryl triflates and iodides by a nondissociative mechanism in THF. The Heck addition product methyl cinnamate was detected at traces from the reaction with phenyl triflate, and from iodobenzene the directoxidative addition product was characterized. The addition of halides or acetate salts to the system led to modest effects on the rate of oxidative addition of aryl
Process for producing bis( trifluoromethyl)benzaldehyde
申请人:——
公开号:US20020042541A1
公开(公告)日:2002-04-11
The invention relates to a process for producing a bis(trifluoromethyl)benzaldehyde represented by the general formula [1]. This process includes reacting a mono-substituted bis(trifluoromethyl)benzene, represented by the general formula [2], with carbon monoxide and hydrogen in the presence of a catalyst and a base, the catalyst including a palladium compound and a phosphine,
1
wherein X is a halogen atom selected from F, Cl, Br and I, a trifluoromethanesulfonate group, or a pentafluoroethanesulfonate group.