... Between the two irradiations, the reaction temperature was allowed to cool to about 60 °C. After hydrolysis by addition of concentrated hydrochloric acid (15 mL) and ... Mp 68−70 °C. R f = 0.38 [ethyl acetate/ petroleum ether (60−90 °C) 1:15, v/v, silica gel plate ... 1) For examples, see ...
[Anastasis, Panayiotis; Brown, Philip E. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1982 , # 9 p. 2013 - 2018]