Study on the “Tin-Ene” reaction of α-bromoacetophenone and metallic tin with aldehydes
作者:Jing-Yao Zhou、Yu Jia、Qiu-Yi Shao、Shi-Hui Wu
DOI:10.1080/00397919608086752
日期:1996.2
Abstract β-hydroxy ketones were obtained in good yields by the “tin-ene” reactions of α-bromoacetophenone and metallic tin with aldehydes.
摘要 通过 α-溴苯乙酮和金属锡与醛的“锡-烯”反应,以良好的收率获得了 β-羟基酮。
Strong Lewis acid air-stable cationic titanocene perfluoroalkyl(aryl)sulfonate complexes as highly efficient and recyclable catalysts for C–C bond forming reactions
A series of titanocene perfluoroalkyl(aryl)sulfonate complexes were synthesized, characterized, and applied in various C–C bond forming reactions.
一系列的钛ocene基过氟烷基(芳基)磺酸盐配合物被合成、表征,并应用于各种C-C键形成反应。
P(PhCH<sub>2</sub>NCH<sub>2</sub>CH<sub>2</sub>)<sub>3</sub>N Catalysis of Mukaiyama Aldol Reactions of Aliphatic, Aromatic, and Heterocyclic Aldehydes and Trifluoromethyl Phenyl Ketone
作者:Venkat Reddy Chintareddy、Kuldeep Wadhwa、John G. Verkade
DOI:10.1021/jo901571y
日期:2009.11.6
2-(trimethylsilyloxy)furan underwent clean conversion to β-hydroxy carbonyl compounds under our reaction conditions. In the case of bulky (2,2-dimethyl-1-methylenepropoxy)trimethylsilane, only α,β-unsaturatedesters were isolated. Heterocyclic aldehydes, such as pyridine-2-carboxaldehyde, benzofuran-2-carboxaldehyde, benzothiophene-2-carboxaldehyde, and 1-methyl-2-imidazolecarboxaldehyde, gave good yields of Mukaiyama
Aldol Reactions of α-Bromoalkyl Phenyl Ketones and Aldehydes with Tin(IV) Iodide and Tetrabutylammonium Iodide
作者:Yoshiro Masuyama、Masaru Ohtsuka、Ayako Kondo
DOI:10.1055/s-2006-951550
日期:——
Aldol reactions of α-bromoacetophenone and aldehydes in dichloromethane produced the corresponding E-α,β-unsaturated ketones at 25 °C with one equimolar amount of tin(IV) iodide, one equimolar amount of tetrabutylammonium iodide and one equimolar amount of N,N-diisopropylethylamine, and produced the corresponding β-hydroxy ketones at -80 °C with one equimolar amount of tin(IV) iodide and two equimolar
α-溴苯乙酮和醛在二氯甲烷中的羟醛反应在 25 °C 下产生相应的 E-α,β-不饱和酮,其中包含一等摩尔量的碘化锡 (IV)、一等摩尔量的四丁基碘化铵和一等摩尔量的 N,N -二异丙基乙胺,并在 -80 °C 下用一等摩尔量的碘化锡 (IV) 和两等摩尔量的四丁基碘化铵生成相应的 β-羟基酮。在 -80 °C 的二氯甲烷中,使用一等摩尔量的碘化锡 (IV) 和两等摩尔量的四丁基碘化铵,α-溴苯丙酮与醛反应,选择性地提供相应的顺-α-甲基-β-羟基酮。
Facile routes to boron enolates. Et3B-mediated Reformatsky type reaction and three components coupling reaction of alkyl iodides, methyl vinyl ketone, and carbonyl compounds
作者:Kyoko Nozaki、Koichiro Oshima、Kiitiro Utimoto
DOI:10.1016/0040-4039(88)85330-9
日期:——
Reaction of α-bromoketones with Ph3SnH in the presence of Et3B provides boron enolates which react with carbonyl compounds to give β-hydroxyketones in good yields. Et3B-induced Reformatsky type reaction of α-iodoketones with an aldehyde or ketone proceeds without Ph3SnH.