Triethylamine → 6-Benzyloxy-4-(methylsulfonyl)amino-2,2-dimethylchroman

反応式

[NH2:1][CH:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([O:12][CH2:13][C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[CH:10]=2)[O:5][C:4]([CH3:21])([CH3:20])[CH2:3]1.C(N(CC)CC)C.[CH3:29][S:30](Cl)(=[O:32])=[O:31]>C1COCC1>[CH2:13]([O:12][C:9]1[CH:10]=[C:11]2[C:6](=[CH:7][CH:8]=1)[O:5][C:4]([CH3:21])([CH3:20])[CH2:3][CH:2]2[NH:1][S:30]([CH3:29])(=[O:32])=[O:31])[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1

参加物

実験手順

4.0 g (14 mmol) of 4-amino-6-benzyloxy-2,2-dimethylchroman were treated with 4.2 ml (30 mmol) of triethylamine at RT in 80 ml of THF and the mixture was stirred for 30 min, then treated with 1.95 g (1.3 ml, 17 mmol) of methanesulfonyl chloride, the temperature rising to 40° C. The mixture was then heated to reflux for 2 h, allowed to stand overnight at RT, concentrated in vac. and the residue was treated with water; 4.9 g of product, m.p. 162-165° C.