1261280-20-9Relevant academic research and scientific papers
Enantioselective Organocatalyzed Bromolactonizations: Applications in Natural Product Synthesis
Aursnes, Marius,Tungen, J?rn E.,Hansen, Trond V.
, p. 8287 - 8295 (2016/09/28)
Asymmetric bromolactonization reactions of δ-unsaturated carboxylic acids have been investigated in the presence of 10 chiral squaramide hydrogen-bonding organocatalysts. The best catalyst enabled the cyclization of several 5-arylhex-5-enoic acids into th
Enantioselective bromolactonization using an S-alkyl thiocarbamate catalyst
Jiang, Xiaojian,Tan, Chong Kiat,Zhou, Ling,Yeung, Ying-Yeung
supporting information; experimental part, p. 7771 - 7775 (2012/09/07)
The apple never falls far from the tree: S-alkyl thiocarbamate 1 (see scheme, NBP=N-bromophthalimide) was prepared in high yield through a synthetic sequence involving a Newman-Kwart rearrangement of the corresponding O-alkyl thiocarbamates. Compound 1 was used to catalyze bromolactonization, thus providing enantioenriched δ-lactones in excellent yield and enantioselectivity. Copyright
Asymmetric bromolactonization catalyzed by a C3-symmetric chiral trisimidazoline
Murai, Kenichi,Matsushita, Tomoyo,Nakamura, Akira,Fukushima, Shunsuke,Shimura, Masato,Fujioka, Hiromichi
supporting information; experimental part, p. 9174 - 9177 (2011/02/26)
A productive alliance: In an enantioselective organocatalytic bromolactonization of 5-substituted hex-5-enoic acids (see scheme), it appears that the formation of an ion pair through interaction of the trisimidazoline catalyst 1 with the substrate both cr
