A phenolic compound which can be obtained by reacting the compound of the formula (1):
wherein R
1
groups are each independently present and represent a hydrogen atom etc. with the formula (6):
wherein R
4
groups are each independently present and represent a hydrogen atom etc.; and k represents the number of R
4
groups and is an integer of 0 to 4 and an epoxy resin which can be obtained by reacting the phenolic compound with an epihalohydrin are excellent in solvent solubility and also of which cured product has an excellent thermal conductance.
US5874631A
申请人:——
公开号:US5874631A
公开(公告)日:1999-02-23
<i>O</i>-Benzenedisulfonimide as a Reusable Brønsted Acid Catalyst for Hetero-Michael Reactions
hetero-Michael reactions among various oxygen, sulfur, and nitrogen nucleophiles and α,β-unsaturated compounds were carried out in the presence of catalytic amounts of o-benzenedisulfonimide as Brønstedacid organocatalyst. The reaction conditions were very mild, and the yields of target products were good. The catalyst was easily recovered and purified, ready to be used in further reactions. This ability