Tungstosilicic Acid: An Efficient and Ecofriendly Catalyst for the Conversion of Alcohols to Alkyl Iodides

Table 2

Comparison of H₄SiW₁₂O₄₀/KI for the conversion of benzyl alcohol into iodide with other reagents.

Entry	Reagent	Reaction conditions	Time	Yield	Ref.
1	N,N-diethylaniline : BF3/I2	RT	12 h	86	[17]
2	Me3SiCl–NaI	RT	20 min	98	[18]
3	P2I4, CS2	RT	30 min	89	[19]
4	I2	Refluxing petroleum ether	1.5 h	56	[20]
5	NaI/BF3⋅Et2O	RT	25 min	94	[21]
6	CeCl3⋅7H2O/NaI	Refluxing acetonitrile	20 h	90	[22]
1	NaI, mont. KSF	MW	5 min	55	[25]
2	KI/H2SO4, kaolin clay	MW	5 min	92	[26]
9	CsI/MeSO3H	RT	15 min	95	[27]
10	H4SiW12O40/KI	RT	30 min	96	This work