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Dhara HN, Das B, Barik D, Manna S, Patel BK. Pd(II)-Catalyzed Three-Component Synthesis of Furo[2,3- d]pyrimidines from β-Ketodinitriles, Boronic Acids, and Aldehydes. Org Lett 2023; 25:9070-9075. [PMID: 38088369 DOI: 10.1021/acs.orglett.3c04017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
A Pd(II)-catalyzed three-component synthesis of 2,4,6-triarylfuro[2,3-d]pyrimidines from β-ketodinitriles, boronic acids, and aldehydes has been developed. The participation of both nitrile (-CN) groups led to the concurrent construction of furo-pyrimidine via the formation of C-C, C═C, C-O, C-N, and C═N bonds. The compounds show excellent photoluminescence properties with absorption maxima ranging from 348 to 387 nm and emission from 468 to 533 nm. The synthetic utility of the protocol was further demonstrated through a few postsynthetic manipulations.
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Affiliation(s)
- Hirendra Nath Dhara
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Bubul Das
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Dinabandhu Barik
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Supriya Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
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2
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Ko N, Min S, Moon K, Shin H, Kwon NY, Mishra NK, Rakshit A, Singh P, Kim IS. Catalyst-Controlled C-H Allylation and Annulation of 2-Aryl Quinazolinones with 2-Methylidene Cyclic Carbonate. J Org Chem 2023; 88:13315-13326. [PMID: 37668242 DOI: 10.1021/acs.joc.3c01652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
The site-selective modification of quinazolinone as a privileged bicyclic N-heterocycle is an attractive topic in medicinal chemistry and material science. We herein report the ruthenium(II)-catalyzed C-H allylation of 2-aryl quinazolinones with 2-methylidene cyclic carbonate. In addition, tandem C-H allylation and annulation are achieved under rhodium(III) catalysis, resulting in the formation of tetracyclic quinazolinones including a tertiary carbon center. Post-transformations of the synthesized products demonstrate the potential of the developed methodology. A series of mechanistic investigations were also performed.
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Affiliation(s)
- Nayoung Ko
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sujin Min
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyeongwon Moon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyungjin Shin
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Na Yeon Kwon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | | | - Amitava Rakshit
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Pargat Singh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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3
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Yang L, Liu Z, Tang T, Tang S, Li B, Wang B. Ruthenium(II)-Catalyzed Grignard-Type Nucleophilic Addition of C(sp 2)-H Bonds to Unactivated Aldehydes. J Org Chem 2022; 87:14723-14730. [PMID: 36256602 DOI: 10.1021/acs.joc.2c02039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Grignard-type nucleophilic addition of C(sp2)-H bonds to aldehydes catalyzed by high-oxidation-state transition metal complexes is limited to activated aldehydes. Herein, we report the first example of Grignard-type nucleophilic addition of C(sp2)-H bonds to unactivated aldehydes catalyzed by high-oxidation-state ruthenium(II). The reaction has mild reaction conditions and good functional group tolerance. The corresponding alcohol products are obtained in good to excellent yields.
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Affiliation(s)
- Lidong Yang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Zezhao Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Tingyu Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Shibiao Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Bin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Baiquan Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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4
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Liu H, Peng J, Li B, Wang B. Dimeric Manganese-Catalyzed Direct Nucleophilic Addition of C(sp 2)-H Bonds to Inert Aldehydes. J Org Chem 2022; 87:14487-14495. [PMID: 36251701 DOI: 10.1021/acs.joc.2c01908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient direct nucleophilic addition reaction of C(sp2)-H bonds to aldehydes catalyzed by a dimeric manganese has been developed. This reaction has a broad range of substrates, and high yields were also obtained with inert aliphatic aldehydes as substrates. A dimeric Mn2(CO)8Br2 was proven to be a more efficient catalyst precursor than the monomeric Mn(CO)5Br.
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Affiliation(s)
- Hongxin Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Junqin Peng
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Bin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Baiquan Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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5
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Singla D, Paul K. Ru(II)-Catalyzed Regioselective C(5)-H Functionalization of Quinazolinone-Coumarin Conjugates: Synthesis and Photophysical Studies. J Org Chem 2022; 87:10673-10683. [PMID: 35930499 DOI: 10.1021/acs.joc.2c00872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The quinazolinone template offers an exciting potential for transforming molecules into useful bioactivity. Herein, we report the first regioselective C-5 alkenylation of quinazolinone-coumarin conjugates via ruthenium(II) catalyst using amide as a weak directing group. This methodology permits excellent regioselectivity, extensive substrate tolerance, and mild reaction conditions. In addition, it generates interesting fluorophores that show positive solvatochromism in the range from 404 nm (toluene) to 541 nm (methanol).
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Affiliation(s)
- Dinesh Singla
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147001, India
| | - Kamaldeep Paul
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147001, India
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Liu L, Zhang W, Xu C, He J, Xu Z, Yang Z, Ling F, Zhong W. Electrosynthesis of CF
3
‐Substituted Polycyclic Quinazolinones via Cascade Trifluoromethylation/Cyclization of Unactivated Alkene. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101422] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Lei Liu
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Wangqin Zhang
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chao Xu
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Jiaying He
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Zhenhui Xu
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Zehui Yang
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Fei Ling
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Weihui Zhong
- College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 People's Republic of China
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7
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Choi JH, Do Kim H, Kang JY, Jeong T, Ghosh P, Kim IS. Ruthenium(
II
)‐Catalyzed CH/NH Carbonylative Cyclization of
2‐Aryl
Quinazolinones with Isocyanates as
CO
Surrogates. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12228] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jin Ho Choi
- School of Pharmacy Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Hak Do Kim
- School of Pharmacy Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Ju Young Kang
- School of Pharmacy Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Taejoo Jeong
- School of Pharmacy Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Prithwish Ghosh
- School of Pharmacy Sungkyunkwan University Suwon 16419 Republic of Korea
| | - In Su Kim
- School of Pharmacy Sungkyunkwan University Suwon 16419 Republic of Korea
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