中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-噻吩甲醛 | thiophene-2-carbaldehyde | 98-03-3 | C5H4OS | 112.152 |
The thiaestrane 7 was synthesized by two sequential Heck reactions starting from the thiophene derivatives 8a–8c, which contain a (Z)-halogenovinyl group, and the enantiopure hydrindene 2a. The first intermolecular Pd-catalyzed reaction leads to 11a and 11b in a highly regio- and diastereoselective manner. A subsequent intramolecular Heck reaction catalyzed by the palladacycle 4 then gave the thiasteroid 7 with an unusual cis-junction of the rings B and C.