期刊
ORGANIC LETTERS
卷 23, 期 24, 页码 9431-9435出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.1c03575
关键词
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资金
- MEXT (Japan) [JP17H06447]
- JSPS [JP16H06354]
A novel Pd-catalyzed cascade reaction has been developed to construct a cyclopenta-fused acenaphtho[1,2-b]indole (ANI) scaffold, which can be used to synthesize pi-extended ANI derivatives with relatively narrow energy gaps. The potential applications of these ANI molecules as pi-segments in low-band-gap materials are implied by their increased HOMOs and lowered LUMOs.
A novel Pd-catalyzed cascade reaction of N,N-dialkyl-substituted o-alkynylanilines involving an indolization/peri-C-H annulation/N-dealkylation sequence has been developed to construct a cyclopenta-fused acenaphtho[1,2-b]indole (ANI) scaffold. A variety of aromatic hydrocarbons having a peri-C-H bond at the alkynyl terminus, such as naphthalene, phenanthrene, pyrene, and fluoranthene, were employed, affording the corresponding pi-extended ANI derivatives. The ANI molecules showed relatively narrow energy gaps by increasing HOMOs and lowering LUMOs, implying their potential applications as pi-segments in low-band-gap materials.
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