dibenzoyl-L(+)tartaric acid → HCID 131718336, compound

Participants

Reaction Steps

A solution of 7-amino-5,6-dihydro-6-hydroxy-5,5-dimethyl-7H-thieno[3,2-b]pyran (1.73 g, 9.69 mmol) was treated with dibenzoyl-L-tartaric acid (3.3 g, 8.69 mmol) and stirred at rt for 30 min. The mixture was concentrated in vacuo and recrystallized from ethanol to yield 1.8 g (37%) of trans-7-amino-5,6-dihydro-6-hydroxy-5,5-dimethyl-7H-thieno[3,2-b]pyran dibenzoyl-L-tartrate: mp 171°-172° C.; MS: m/z 200(MH+); αD20° =-84.1° (MeOH). Anal. Calcd. for C27H27NO10S: C,58.16; H,4.88; N,2.51.

Provenance & Evidence