... Ha1obutyrates.-Some of these esters are shown in Table 11. The chlorobutyrates of Table I1 were obtained from 4-chloro- butyric acid (Aldrich Chemical Co.) and the alcohol in the presence of p-toluenesulfonic acid monohydrate. ... Page 3. VOl. 8 Iiii~yi,:%ti;, 11.p. 97" (I6 nitn.). ...
[Mudyiwa, Mercy; Ndinguri, Margaret W.; Soper, Steven A.; Hammer, Robert P. Journal of Porphyrins and Phthalocyanines, 2010 , vol. 14, # 10 p. 891 - 903]