By means of an intramolecular Baylis-Hillman reaction the cyclopentene derivative 1 has been formed from 2. Asymmetric induction is low (entry 12, table 1). In the sixmembered ring example 9 --> 10 the yield is only 17% - 23% (entries 1 and 2, table 2).
By means of an intramolecular Baylis-Hillman reaction the cyclopentene derivative 1 has been formed from 2. Asymmetric induction is low (entry 12, table 1). In the sixmembered ring example 9 --> 10 the yield is only 17% - 23% (entries 1 and 2, table 2).