nitroform potassium salt 、 2,6-diphenylpyrylium hydrosulfate 以
水 为溶剂,
以100%的产率得到2,6-Diphenyl-4-trinitromethyl-4H-pyran
参考文献:
名称:
Tropylation and pyrylation of salts of aliphatic mono-, di-, and trinitro compounds
摘要:
We have studied the reactions of salts of nitroalkanes with tropylium and 2,6-diphenylpyrylium salts leading to products of C-tropylation and C-pyrylation of the corresponding anions. The only exception is the salt of cyanodinitromethane, which is not tropylated. Splitting off of a HNO2 molecule from the products of tropylation of nitroalkane anions to prepare nitroheptafulvenes was unsuccessful.