Ultrasound-Assisted Nucleophilic Substitution Reaction of<i>t</i>-Alkyl Halides with Zinc and Titanium Thiocyanate
作者:B. K. Bettadaiah、K. N. Gurudutt、P. Srinivas
DOI:10.1081/scc-120021510
日期:2003.1.7
Abstract Ultrasound promotes nucleophilicsubstitution of t-alkyl halides with ambident thiocyanate nucleophile, in the form of its zinc or titanium thiocyanate, under mild conditions to afford the corresponding thiocyanates selectively, in good to excellent yields. This improved synthetic methodology affords a facile access to tertiary thiols via the corresponding thiocyanate intermediates.
An expedient entry into the preparation of isothiocyanate terpenes is presented. The method involves the addition of isothiocyanicacid prepared “in situ” to terminal double bonds.
提出了方便地制备异硫氰酸酯萜烯的方法。该方法包括将“原位”制备的异硫氰酸加到末端双键上。
Microwave-Assisted Synthesis of Alkyl Thiocyanates
作者:D. James Bound、B. K. Bettadaiah、P. Srinivas
DOI:10.1080/00397911.2011.622848
日期:2013.4.18
Microwave irradiation accelerated the reaction of t-alkyl, allyl, and benzyl halides with Zn(SCN)(2) to afford thiocyanates in excellent yields and high selectivity with the formation of isothiocyanates only in minor proportions. Because thiocyanates are stable intermediates to thiols, the method also affords facile access to corresponding thiols.