O. Miyata et al., STEREOSELECTIVE ADDITION OF 2-AMINOTHIOPHENOL TO ALPHA-ALKOXYCINNAMICACID-DERIVATIVES - ALTERNATIVE SYNTHESIS OF (+ -)-DILTIAZEM/, Tetrahedron, 49(36), 1993, pp. 8119-8128
A stereocontrolled synthesis of (+/-)-diltiazem by applying nucleophil
ic addition of 2-aminothiophenol to alpha-alkoxycinnamic acid derivati
ves is described.