Journal fur Praktische Chemie - Chemiker-Zeitung p. 383 - 390 (1992)
Update date:2022-07-30
Topics:
Kaupp, Gerd
Ulrich, Anke
Sauer, Gerhard
Solid epoxides add gaseous HCl or KBr regioselectively and without melting, if the melting points are sufficiently high.Such additions proceed diastereoselectively with chiral epoxides.These gas/solid reactions are compared to similar transformations in solution.One observes interesting reaction sequences in the conversions of steroidal epoxides.Thus the opening of the epoxide ring may be followed by cationic rearrangements, or it occurs elimination od water, if it creates conjugation to a carbonyl group.
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