![1-[(4-Methylphenyl)sulfonyl]-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine-5-carbonitrile structure](https://static.chemtradehub.com/structs/143/1434747-57-5-fc0d.webp "1-[(4-Methylphenyl)sulfonyl]-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine-5-carbonitrile structure")
1-[(4-Methylphenyl)sulfonyl]-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine-5-carbonitrile
CAS Number:
1434747-57-5
Molecular Formula:
C21H22BN3O4S
Selective syntheses of diversely substituted 2-hydroxy-4′-hydroxybenzophenones through [4 + 2] or [3 + 3] annulation of penta-3,4-dien-2-ones with 3-formylchromones
Literature Information
Publication Date
2017-06-29
DOI
10.1039/C7QO00366H
Impact Factor
5.281
Authors
Xiaonan Shi, Yan He, Xinying Zhang, Xuesen Fan
View Original
Abstract
A selective synthesis of 2-hydroxy-4′-hydroxybenzophenones or their 3′-acylated counterparts through the cascade reactions of 3-formylchromones with diversely substituted penta-3,4-dien-2-ones is presented. Mechanistically, the formation of the title compounds involves either an unprecedented [4 + 2] annulation or a well defined [3 + 3] cyclization depending on the substitution patterns of the penta-3,4-dien-2-one substrates.
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Source Journal
Organic Chemistry Frontiers
CiteScore:
7.8
Self-citation Rate:
8.7%
Articles per Year:
724
Organic Chemistry Frontiers publishes high-quality research from across organic chemistry. Emphases are placed on studies that make significant contributions to the field of organic chemistry by reporting either new or significantly improved protocols or methodologies. Topics include, but are not limited to the following: Organic synthesis Development of synthetic methodologies Catalysis Natural products Functional organic materials Supramolecular and macromolecular chemistry Physical and computational organic chemistry
Recommended Compounds
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N-[2-(4-Hydroxyphenoxy)-4-nitrophenyl]methanesulfonamide
CAS Number:
109032-22-6
Molecular Formula:
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S-[2,3-Bis(palmitoyloxy)propyl]-N-[(9H-fluoren-9-ylmethoxy)(hydroxy)methylene]cysteine
CAS Number:
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Molecular Formula:
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