The Synthesis of the Locating Substitution Derivatives of Chitosan by Click Reaction at the 6-Position of Chitin

Table 1

The impact of the click reaction conditions on the immobilized amount of the β-cyclodextrin in the product.

nCD-6-PgA :	Reaction time/h	Reaction temperature/°C	Solvents	Immobilized/10^−4 mol/g amount/μmol·g^−1
0.5 : 1	8	40	Dimethyl sulfoxide	0.8802
1 : 1				0.9198
1.5 : 1				1.1762
2 : 1				1.1805
2.5 : 1				1.2017
5 : 1				1.1901
1 : 1	2	60	Dimethyl sulfoxide	0.6759
	4			0.7365
	6			0.7959
	8			0.9759
	10			1.0107
1 : 1	8	30	Triethylamine	0.4375
		40		0.8659
		55		1.2365
		60		1.5110
		65		1.3079
		75		1.1358
		90		0.9159
1 : 1	8	60	Dimethyl sulfoxide	0.9759
			N-methylpyrrolidone	0.7856
			5% LiCl-DMAc	1.2723
			Triethylamine	1.5110