1357261-80-3Relevant academic research and scientific papers
Catalytic and enantioselective oxa-Piancatelli reaction using a chiral vanadium complex
Schober, Lukas,Sako, Makoto,Takizawa, Shinobu,Gr?ger, Harald,Sasai, Hiroaki
, p. 10151 - 10154 (2020/09/21)
An enantioselective oxa-Piancatelli reaction was established for the first time using a chiral vanadium(v) catalyst. The dual Br?nsted and Lewis acid properties of the vanadium catalyst afforded 4-hydroxycyclopent-2-enone derivatives in up to 90% yields and with 93:7 enantiomeric ratios, as well as >20:1 diastereomeric ratios.
Synthesis of an advanced intermediate toward the hNK-1 antagonist with the cyclopentane core
Nakata, Kenya,Kiyotsuka, Yohei,Kitazume, Tomoya,Kobayashi, Yuichi
, p. 2872 - 2874 (2012/01/06)
Allylic substitution of monomethoxyacetate of 4-cyclopentene-1,3-diol (91% ee) with 4-FC6H4ZnBr (4 equiv) and CuCl (30 mol%) gave anti-SN2 product, which upon epoxidation with MCPBA afforded -epoxide stereoselectively. The epoxide was reduced with LiEt3BH, and the resulting alcohol was converted into the targeted amine by using Mitsunobu reactions twice with 3,5-(O2N)2C6H 3CO2H and then with phthalimide. Georg Thieme Verlag Stuttgart · New York.
