Preparation of polyfunctional nitro olefins and nitroalkanes using the copper-zinc reagents RCu(CN)ZnI
摘要:
The addition of the copper-zinc reagents RCu(CN)ZnX to a variety of nitro olefins produces polyfunctional nitroalkanes in high yields. The intermediate zinc or copper nitronates can be directly submitted to a Nef reaction (O3,-78-degrees-C) and converted to polyfunctional ketones in a one-pot procedure. The addition of RCu(CN)ZnX to nitro olefins bearing a leaving group (RSO2, RS) in the beta-position provides pure (E)-nitro olefins in excellent yields. The reaction has been applied for the stereoselective preparation of 1,3-nitrodienes and for a Diels-Alder reaction precursor.
Selective cleavage of ethers by sodium iodide-acyl chloride
作者:Akira Oku、Toshiro Harada、Kazuhiro Kita
DOI:10.1016/s0040-4039(00)86921-x
日期:1982.1
Cyclic and acyclic ethers are regioselectively cleaved at less substituted α-carbon-oxygen bond in the absence of Lewis acid by the reagent system of sodium iodide and acylchlorides.
Regiocontrolled ring opening of 2-methyltetrahydrofuran with acid chlorides and iodides
作者:Pascal Mimero、Christine Saluzzo、Roger Amouroux
DOI:10.1016/s0040-4039(00)76756-6
日期:1994.3
Regioselective cleavage of 2-methyltetrahydrofuran with bulky acid iodides RCOI gives predominantly the primary iodides, while acid chlorides RCOCl lead to secondary chlorides almost exclusively, regardless of the nature of R.
Mimero Pascal, Saluzzo Christine, Amouroux Roger, Tetrahedron Lett, 35 (1994) N 10, S 1553-1556
作者:Mimero Pascal, Saluzzo Christine, Amouroux Roger