211230-14-7Relevant articles and documents
Asymmetric Hydrocyanation of Alkenes without HCN
Li, Xiuxiu,You, Cai,Yang, Jiaxin,Li, Shuailong,Zhang, Dequan,Lv, Hui,Zhang, Xumu
supporting information, p. 10928 - 10931 (2019/07/15)
A general and efficient rhodium-catalyzed asymmetric cyanide-free hydrocyanation of alkenes has been developed. Based on the asymmetric hydroformylation/condensation/aza-Cope elimination sequences, a broad scope of substrates including mono-substituted, 1,2-, and 1,1-disubstituted alkenes (involving natural product R- and S-limonene) were employed, and a series of valuable chiral nitriles are prepared with high yields (up to 95 %) and enantioselectivities (up to 98 % ee). Notably, the critical factor to achieve high enantioseletivies is the addition of catalytic amount of benzoic acid. This novel methodology provides an efficient and concise synthetic route to the intermediate of vildagliptin and anagliptin.
Total synthesis of sporochnols, fish deterrents from a marine alga
Ohira, Susumu,Kuboki, Atsuhito,Hasegawa, Taisuke,Kikuchi, Takato,Kutsukake, Tatsuhiko,Nomura, Maki
, p. 4641 - 4644 (2007/10/03)
Sporochnols, fish deterrents from a marine alga, were synthesized, using intramolecular C-H insertion of alkylidenecarbene as a key step to construct the chiral quaternary center.
