Stepwise synthesis of crownophanes having either one or two hydroxy groups via Claisen rearrangement
摘要:
Bis(naphthyl)crownophanes having an isobutenyl group and different ring size were synthesized. By control of the reaction temperature and time, both the first-step product having one hydroxyl group and the second-step product having two hydroxy groups can be isolated in high yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
Stepwise synthesis of crownophanes having either one or two hydroxy groups via Claisen rearrangement
摘要:
Bis(naphthyl)crownophanes having an isobutenyl group and different ring size were synthesized. By control of the reaction temperature and time, both the first-step product having one hydroxyl group and the second-step product having two hydroxy groups can be isolated in high yields. (C) 2000 Elsevier Science Ltd. All rights reserved.