| 摘要 |
NEW MATERIAL:The 4',6'-dihydroxy [1,1':3',1':3',1'']-quarter phenyl of formula I. USE:An electron accepting compound for heat-sensitive recording material, etc. PREPARATION:The compound of formula I can be produced by the dealkylation of a compound of formula III produced by the oxidative dimerization of 3-t- butyl-4-hydroxybiphenyl of formujla II. |
