期刊
CHEMICAL COMMUNICATIONS
卷 46, 期 26, 页码 4791-4793出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0cc00470g
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-
资金
- Direct For Mathematical & Physical Scien [0748525] Funding Source: National Science Foundation
Atropisomeric benzoylformamides 1 undergo Type II reaction leading to cis-2 and trans-2 oxazolidin-4-one photoproducts. The N-C(Aryl) chiral axis is maintained during the course of the phototransformation in spite the reaction proceeding through a near planar intermediate(s). As the rotational barrier of the N-C(Aryl) chiral axis in the cis-2 and trans-2 photoproducts is lowered when compared with the reactant 1, the isolated optically pure trans-2 isomer is converted to the ent-cis-2 isomer without affecting the C-5 stereogenic center, resulting in resolution of the cis-2 enantiomers.
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