Table 4.

A comparison of the rates of solvolysis of MeSCOCl, EtSCOCl, i-BuSCOCl, i-PrSCOCl, and t-BuSCOCl in selected common solvents at 25.0 °C.

Solvent (%)	MeSCOCl 105k, s−1 a	EtSCOCl 105k, s−1 b	i-BuSCOCl 105k, s−1 c	i-PrSCOCl 105k, s−1 d	t-BuSCOCl 105k, s−1 e
100% MeOH	2.00	2.15	2.27	1.99	7.43
100% EtOH	0.884	0.430	1.01	1.21	0.777
80% EtOH	2.44	2.68	2.99	13.7	40.4
97% TFE	0.986	5.98	6.01	49.8	3730
90% TFE	1.92	10.2	11.7	69.5	3200
70% HFIP	13.9	81.3	78.4	659	43870

^aRef 7.

^bRates are reported at 24.2 °C in Ref. 6.

^cRef. 9.

^dRef. 8.

^eTable 1.