Gold-catalyzed cyclo-isomerization of 1,6-diyne-4-en-3-ols to form naphthyl ketone derivatives
作者:Jian-Jou Lian、Rai-Shung Liu
DOI:10.1039/b618291g
日期:——
We report a new efficient gold-catalyzed cyclization of 1,6-diyne-4-en-3-ols to give naphthylketone derivatives under ambient conditions. The value of this cyclization is reflected by its applicability to a wide range of alcohol substrates.
Catalytic C–C Cleavage/Alkyne–Carbonyl Metathesis Sequence of Cyclobutanones
作者:Jiqiang Gao、Chunhui Liu、Zhongjuan Li、Haotian Liang、Yuhui Ao、Jinbo Zhao、Yuchao Wang、Yuanqi Wu、Yu Liu
DOI:10.1021/acs.orglett.0c01317
日期:2020.5.15
substrates decorated with various substituents at different positions were all well accommodated. Preliminary mechanistic studies show that silver salt acted as a Lewis acid to facilitate both C-C cleavage of the cyclobutanone moiety and the subsequent metathesis between C═O and C≡C bonds.
NHC Brønsted base-catalyzed transformations of isochromene derivatives: regulation of products by the structures of carbene catalysts
作者:Xing-Wen Fan、Ying Cheng
DOI:10.1039/c2ob26622a
日期:——
Two different transformations of α-(isochromen-1-yl)ketones catalyzed by NHC Brønsted bases are reported. In the presence of a triazole carbene, α-(isochromen-1-yl)ketones isomerized into β-(2-(aroylmethylene)phenyl)-α,β-unsaturated ketones in 38–88% yields, while the same reaction catalyzed by an imidazole carbene produced 1-aroylnaphthalene derivatives in 90–99% yields. This work not only provides
One-Pot Dual C–C Bond-Forming Cascade Process via Suzuki Coupling and Intramolecular Cyclocondensation: An Access to Functionalized Naphthalenes
作者:Pradip S. Waghmare、Sreenivasulu Chinnabattigalla、Satyanarayana Gedu
DOI:10.1021/acs.joc.3c01501
日期:2023.10.6
ketones in single-step reactions from readily available materials is highly desirable. Herein, domino one-pot synthesis of functionalized naphthyl ketones via intermolecular Suzuki–Miyauracoupling, followed by intramolecular distal aldol-type condensation with the γ-methyl/methylene groups is reported. The present strategy displayed a comprehensive substrate scope and good functional group tolerance and