The chemistry of 2-oxido-3-phenyliodonio-1,4-benzoquinones: Transformation to 2-cyclopentene-1,4-diones and cycloadditions
摘要:
The conversion of substituted 2-hydroxy-1,4-benzoquinones, 1, to 2-cyclopentene-1,4-diones, 3, is effected by thermolysis of their iodonium zwitterions, 2. Some cycloadditions through 2 are also described.
Triflic acid an efficient catalyst for the Thiele-Winter reaction
摘要:
Triflic acid is a convenient and non hazardous acid for the Thiele-Winter reaction of quinones. The synthetic scope of the Thiele-Winter reaction was increased by the use of triflic acid. (C) 1997 Elsevier Science Ltd.