sodium hydroxide; tetrabutylammomium bromide in dichloromethane; water 6 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
Shekhar, Shashank; Dunn, Travis B.; Kotecki, Brian J.; Montavon, Donna K.; Cullen, Steven C.
Journal of Organic Chemistry, 2011 , vol. 76, # 11 p. 4552 - 4563