Arene Trifunctionalization with Highly Fused Ring Systems through a Domino Aryne Nucleophilic and Diels–Alder Cascade
作者:Jia He、Zizi Jia、Hongcheng Tan、Xiaohua Luo、Dachuan Qiu、Jiarong Shi、Hai Xu、Yang Li
DOI:10.1002/anie.201911730
日期:2019.12.16
A convenient and efficient domino aryne process was developed under transition-metal-free conditions to generate a range of tetra- and pentacyclic ring systems. This transformation was realized via a 1,2-benzdiyne through a nucleophilic and Diels-Alder reaction cascade using styrene as the diene moiety. Three new chemical bonds, namely one C-N and two C-C bonds, and two benzofused rings could be constructed
Allylic trichlorotins, prepared in situ from α,α-diisopropylhomoallylic alcohols with tin(II) chloride and N-chlorosuccinimide in dichloromethane at -40 °C, cause nucleophilic addition to N-tosylimines or N-tosyliminiums to afford the corresponding α-substituted homoallylic amines.
Rhodium-catalyzed and sonication-accelerated addition of aryltin and aryllead reagents to imines in air and water
作者:Rui Ding、Cui Huo Zhao、Yong Jun Chen、Li Liu、Dong Wang、Chao Jun Li
DOI:10.1016/j.tetlet.2004.01.160
日期:2004.3
In the presence of a rhodium catalyst, imines (1a–k) react with phenyltrimethyltin 2a or phenyltrimethyllead 2b in water and air under ultrasonic irradiation at 35 °C to give the corresponding diarylmethylamines (3a–k) in good yields.
Rh(I)-catalyzed addition of alkenylzirconocene chlorides to aldimine derivatives
作者:Akito Kakuuchi、Takeo Taguchi、Yuji Hanzawa
DOI:10.1016/s0040-4039(02)02767-3
日期:2003.1
of alkenylzirconocene chloride complexes to N-Ts, -PO(OEt)2 and COOR aldiminederivatives were efficiently carried out in dioxane at room temperature to give allylic amine derivatives in excellent yields. This is the first example of the catalytic addition reactions of alkenylzirconocene chloride complexes to aldiminederivatives.
The N,N‘-dioxide−Cu(I) complexes have been developed to catalyze the addition of nitromethane to N-tosyl aldimines. The aza-Henryreaction proceeds smoothly affording the corresponding nitro amines in good yields with high enantioselectivities. A catalytic cycle is proposed to explain the origin of reactivity.