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Light-controlled pKa value of chiral Bronsted acid catalysts in enantioselective aza-Friedel-Crafts reaction
被引:3
作者:
Krishnan, Chandu G.
[1
]
Kondo, Masaru
[2
]
Yasuda, Osamu
[1
]
Fan, Duona
[1
]
Nakamura, Kento
[1
]
Wakabayashi, Yoshitomo
[1
]
Sasai, Hiroaki
[1
,3
]
Takizawa, Shinobu
[1
]
机构:
[1] Osaka Univ, SANKEN, Ibaraki Shi, Ibaraki, Osaka 5670047, Japan
[2] Ibaraki Univ, Grad Sch Sci & Engn, Hitachi, Ibaraki 3168511, Japan
[3] Osaka Univ, Grad Sch Pharmaceut Sci, Suita, Osaka 5650871, Japan
基金:
日本学术振兴会;
关键词:
PHOSPHORIC-ACIDS;
PHOTOSWITCHABLE ORGANOCATALYSIS;
PHOTOCHROMIC DIARYLETHENES;
SYSTEM;
PHOTOMODULATION;
INHIBITION;
ACTIVATION;
MEMORIES;
INDOLES;
D O I:
10.1039/d3cc02719h
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Bis(dithienylethene)-based BINOL-derived phosphoric acid (DTE-BPA) has been developed as a light-controlled chiral organocatalyst for the first time. The photoinduced modulation of the reactivity and selectivity via the open/close isomerization of the DTE scaffold led to superior light-controlled ability in the enantioselective aza-Friedel-Crafts reaction of aldimines with indoles. DFT studies showed that photoisomerization is accompanied by a shift of 1.1 pK(a) units between the open and closed isomers.
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页码:9956 / 9959
页数:5
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