A new chiral carbamoylnitroso dienophile 1 has been prepared from a substituted pyrrolidine possessing C2 symmetry. Compound 1 reacts with dienes to yield (4 + 2) cycloadducts with very high diastereoisomeric excesses. © 1990.
A new chiral carbamoylnitroso dienophile 1 has been prepared from a substituted pyrrolidine possessing C2 symmetry. Compound 1 reacts with dienes to yield (4 + 2) cycloadducts with very high diastereoisomeric excesses. © 1990.
