Application In Synthesis of 2-Chloro-6-nitrobenzo[d]thiazole. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Chloro-6-nitrobenzo[d]thiazole, is researched, Molecular C7H3ClN2O2S, CAS is 2407-11-6, about Effective induction of β-selectivity using α- or β-mannosyl 6-nitro-2-benzothiazoate in mannosylation. Author is Hashihayata, Takashi; Mukaiyama, Teruaki.
Highly β-selective mannosylations of glycosyl acceptors with an α-mannosyl 6-nitro-2-benzothiazoate donor (I) were carried out smoothly in the presence of a catalytic amount of tetrakis(pentafluorophenyl)boric acid [HB(C6F5)4] to afford the corresponding disaccharides in good to high yields: it was proved that high β-selectivity was entirely dependent on the characteristic properties of a donor I and a catalyst, HB(C6F5)4. Interestingly, it was observed that in situ anomerization from 1β to 1α took place rapidly when β-mannosyl donor was treated with a catalytic amount of HB(C6F5)4 in CH2Cl2.
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