Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Regioselective cleavage of 2-methyltetrahydrofuran with bulky acid iodides RCOI gives predominantly the primary iodides, while acid chlorides RCOCl lead to secondary chlorides almost exclusively, regardless of the nature of R. ... Typical procedure with RCOCl/NaI : To an ...