On November 30, 2021, Zhang, Ying-Qi; Chen, Yang-Bo; Liu, Ji-Ren; Wu, Shao-Qi; Fan, Xin-Yang; Zhang, Zhi-Xin; Hong, Xin; Ye, Long-Wu published an article.Reference of 2-Methoxynaphthalene The title of the article was Asymmetric dearomatization catalysed by chiral Bronsted acids via activation of ynamides. And the article contained the following:
The chiral Bronsted acids enable the catalytic asym. dearomatization reactions of naphthols- phenols- RCCN(R1)R2 (R = 2-(4-hydroxynaphthalen-1-yl)benzen-1-yl, 2-(4-hydroxy-1,4,5,6,7,8-hexahydronaphthalen-1-yl)benzen-1-yl, 2-(2-hydroxyphenyl)benzen-1-yl, etc.; R1 = Ms, Ts, Bs, etc.; R2 = Ph, naphthalen-2-yl, n-Bu, etc.) and pyrrole-ynamides R3(CH2)2NCC(R1)R2 (R3 = 2,5-dimethyl-1H-pyrrol-1-yl, 2-methyl-5-(thiophen-3-yl)-1H-pyrrol-1-yl, 2-methyl-5-phenyl-1H-pyrrol-1-yl, etc.) by the direct activation of alkynes. This method leads to the practical and atom-economic construction of various valuable spirocyclic enones I (R4 = H, 6-F, benzene-1,2-bis(yl), 5-Cl, etc.) and II, 2H-pyrroles III (R5 = Me, Ph, thiophen-2-yl, etc.; R6 = Me, Et) that bear a chiral quaternary carbon stereocenter in generally good-to-excellent yields with excellent chemo-, regio- and enantioselectivities. The activation mode of chiral Bronsted acid catalysis revealed in this study is expected to be of broad utility in catalytic asym. reactions that involve ynamides and the related heteroatom-substituted alkynes. The experimental process involved the reaction of 2-Methoxynaphthalene(cas: 93-04-9).Reference of 2-Methoxynaphthalene
The Article related to spirocyclic enone preparation regioselective chemoselective diastereoselective, naphthol ynamide preparation asym dearomatization bronsted acid catalyst, phenol ynamide preparation asym dearomatization bronsted acid catalyst, pyrrole preparation regioselective chemoselective diastereoselective and other aspects.Reference of 2-Methoxynaphthalene
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