中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
杯[4]芳烃 | 25,26,27,28-tetrakis(hydroxy)calix[4]arene | 74568-07-3 | C28H24O4 | 424.496 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
杯[4]芳烃 | 25,26,27,28-tetrakis(hydroxy)calix[4]arene | 74568-07-3 | C28H24O4 | 424.496 |
—— | 5,11,17,23-tetraacetyl-25,26,27,28-tetrahydroxycalix[4]arene | 109894-43-1 | C36H32O8 | 592.645 |
The “paco” or “alt” isomers of acetoxylcalixarenes were selectively prepared in the presence of catalytic amount (2 mol%) of Bi(OTf)3,. Calix[4]arenes selectively gave two different isomers under specified conditions with a good selectivity, but, calix[6]arenes and calix[8]arenes only gave the “alt” isomers with a high selectivity.