Two New 1,1,3,3-Tetramethylguanidinium Halochromates (C₅H₁₄N₃CrO₃X) (X: Cl, F): Efficient Reagents for Oxidation of Organic Substrates under Solvent-Free Conditions and Microwave Irradiation

Table 2

Oxidation of benzyl alcohol in different solvents with TMGCC and TMGFC.

Solvents	Substrate : oxidation (molar ratio)	Reaction period/h	TMGCC Yield%	TMGFC Yield%
CH2Cl2	1 : 2	2	82	88
Acetone	1 : 2	2	63	70
DMF	1 : 2	2	60	65

Yields refer to the isolated 2,4-DNP derivative [29].