132814-55-2Relevant academic research and scientific papers
Fe(III)-catalyzed trityl benzyl ether formation and disproportionation cascade reactions to yield benzaldehydes
Wang, Xiaoyu,Du, Chuan,Shi, Hui,Pang, Yadong,Jin, Shengfei,Hou, Yuqian,Wang, Yanshi,Peng, Xiaoshi,Xiao, Jianyong,Liu, Yang,Liu, Yongxiang,Cheng, Maosheng
, p. 6744 - 6748 (2015/08/24)
During investigating water-compatible Lewis acids catalyzed etherifications using alcohols as alkylating reagents directly, we developed Fe(III)-catalyzed trityl benzyl ether formations irradiated by microwave. Then an in situ trityl benzyl ether formation and disproportionation cascade reaction was achieved to yield the benzaldehyde products with good functional group tolerances under neat conditions at relative higher temperatures. The substituent effects of the substrates on the etherification and disproportionation were explored by changing the substitutions on benzyl alcohols and triarylmethanols using chemical kinetic plots methods and the mechanism of the transformation was studied by crossover experiments. The etherification and disproportionation cascade process could be conveniently scaled up in laboratory without losing much efficiency.
Regioselectivity switch achieved in the palladium catalyzed α-arylation of enones by employing the modified Kuwajima-Urabe conditions
Kale, Ajit Prabhakar,Pawar, Govind Goroba,Kapur, Manmohan
supporting information; experimental part, p. 1808 - 1811 (2012/06/18)
A new regioselective approach to the synthesis of α-aryl enones is reported. This represents an important application of the Kuwajima-Urabe protocol toward the synthesis of this simple albeit complex functional array. Several α-aryl enones were synthesized by the palladium catalyzed arylation of triethylsilylenol ethers of enones with high regioselectivity and broad scope, utilizing sterically encumbered electron-rich phosphine ligands to drive the reaction.
C-Glycosides. 9. Stereospecific Synthesis of C-Glycosidic Spiroketal of the Papulacandins
Czernecki, Stanislas,Perlat, Marie-Claude
, p. 6289 - 6292 (2007/10/02)
The reaction of ortho-lithiated triphenylmethyl benzyl ether with perbenzylated D-gluconolactone 1 followed by cyclization by BF3*Et2O provides a new stereospecific synthesis of C-glycosidic spiroketals.The structure of the peracetylated derivative was determined by X-ray diffraction.This methodology is applied to the synthesis of the spiroketal unit of papulacandins.
