A New Strategy for the Synthesisof γ-Nitro Alcohols from Aliphatic Nitro Compounds
作者:Sema L. Ioffe、Roman A. Kunetsky、Alexander D. Dilman、Konstantin P. Tsvaygboym、Yury A. Strelenko、Vladimir A. Tartakovsky
DOI:10.1055/s-2003-40203
日期:——
A general method for the synthesis of γ-nitro alcohols 1 via C-C-cross-coupling of nitro compounds 3 with silyl derivatives of nitro compounds 4, deoximination of resulting substrates and selective reduction of carbonyl group of ketones 2 is elaborated.
Novel Convenient Method for the Synthesis of N,N-Bis(trimethylsilyloxy)enamines
作者:A. D. Dilman、A. A. Tishkov、I. M. Lyapkalo、S. L. Ioffe、Yu. A. Strelenko、V. A. Tartakovsky
DOI:10.1055/s-1998-2019
日期:1998.2
Both primary and secondary aliphatic nitro compounds 1 were found to react with two equivalents of bromotrimethylsilane in the presence of triethylamine followed by aqueous workup to give appropriate N,N-bis(trimethylsilyloxy)enamines 3 in good isolated yields. Products 3, starting from some secondary and/or sterically hindered compounds 1, are synthesized from the corresponding silyl nitronates 2.
Synthesis of α-Thiooximes by Addition of Thiols to N,N-Bis(oxy)-enamines: A Comparative Study of S-, N-, and O-Nucleophiles in Michael Reaction with Nitrosoalkene Species
Nucleophilicaddition of thiols to N , N -bis(oxy)enamines (nitrosoalkene acetals) produce valuable α-thiooximes in a highly efficient manner. The reaction was found to be solvent-dependent, likely because of distinct mechanisms operating in nonpolar and basic solvents (involving either Bronsted acid or Lewis base catalysis). By performing a series of competition experiments, the relative reactivity
A General Metal-Assisted Synthesis of α-Halo Oxime Ethers from Nitronates and Nitro Compounds
作者:Alexey Yu. Sukhorukov、Maria A. Kapatsyna、Tammy Lim Ting Yi、Hyeong Ryool Park、Yana A. Naumovich、Petr A. Zhmurov、Yulia A. Khomutova、Sema L. Ioffe、Vladimir A. Tartakovsky
DOI:10.1002/ejoc.201403083
日期:2014.12
α-halo oximeethersfrom readily accessible nitronates and nitro compounds via bis(oxy)enamines is reported. A key step of the strategy involves the unprecedented reaction of bis(oxy)enamines with a metal (Co, Zn, Mg, Mn) halide that acts as both a promoter and halide (Br, I, Cl) source. A variety of cyclic and acyclic ethers of α-halo oximes, including previously unavailable trimethylsilyl ethers of α-iodo
Stereoselective approach to conjugated enone oximes from aliphatic nitro compounds and sulfur ylides
作者:Rauf T. Akhmirov、Sema L. Ioffe、Alexey Yu. Sukhorukov
DOI:10.1016/j.mencom.2021.09.031
日期:2021.9
A novel approach to conjugated enone oximes from aliphatic nitro compounds deals with double silylation of N,N-bis(silyloxy) enamines followed by a stereoselective reaction with an ester-stabilized sulfur ylide. The proposed mechanism involves the generation of labile nitrosoalkenes as intermediates, which react with the sulfur ylide to give target enone oximes.