- Indium-Catalyzed C?F Bond Transformation through Oxymetalation/β-Fluorine Elimination to Access Fluorinated Isocoumarins
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Fluorinated heterocycles have attracted much attention in the pharmaceutical and agrochemical industries. Many strategies have already been developed to achieve the synthesis of fluorinated heterocycles. Formidable challenges remain, however, in the synthesis of fluorinated isocoumarin derivatives that are among the most alluring structural motifs. Herein, the indium-catalyzed C?F bond transformation of 2-(2,2-difluorovinyl) benzoates is reported, which are readily accessible compounds, to give a diverse array of fluorinated isocoumarins. The present reaction proceeds smoothly using inexpensive reagents: a catalytic amount of indium salt in the presence of zinc salt. A theoretical calculation of potential energy profiles showed that the reaction consists of oxymetalation with the elimination of alkyl halide and the β-fluorine elimination.
- Yata, Tetsuji,Nishimoto, Yoshihiro,Chiba, Kouji,Yasuda, Makoto
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supporting information
p. 8288 - 8294
(2021/05/21)
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- POLYCYCLIC COMPOUNDS AND METHODS FOR THE TARGETED DEGRADATION OF RAPIDLY ACCELERATED FIBROSARCOMA POLYPEPTIDES
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The present disclosure relates to bifunctional compounds, ULM— L—PTM, which find utility as modulators of Rapidly Accelerated Fibrosarcoma (RAF, such as c-RAF, A- RAF and/or B-RAF; the target protein). In particular, the present disclosure is directed to bifunctional compounds, which contain on one end a Von Hippel-Lindau, cereblon, Inhibitors of Apotosis Proteins or mouse double-minute homolog 2 ligand which binds to the respective E3 ubiquitin ligase and on the other end a moiety which binds the target protein RAF, such that the target protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of target protein. The present disclosure exhibits a broad range of pharmacological activities associated with degradation/inhibition of target protein. Diseases or disorders that result from aggregation or accumulation of the target protein, or the constitutive activation of the target protein, are treated or prevented with compounds and compositions of the present disclosure.
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Paragraph 1897; 1898
(2020/03/29)
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- Synthesis of chiral isoindolinones via asymmetric propargylation/lactamization cascade
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A Zn-mediated propargylation/lactamization cascade reaction with chiral 2-formylbenzoate derived N-tert-butanesulfinyl imines was realized, which provided a practical and efficient method for the synthesis of chiral isoindolinones. High diastereoselectivities (up to 97:3 dr) and good reaction yields were observed for most examined cases.
- Meng, Jiao-Long,Jiao, Tang-Qian,Chen, Ya-Heng,Fu, Rui,Zhang, Shu-Sheng,Zhao, Qian,Feng, Chen-Guo,Lin, Guo-Qiang
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p. 1564 - 1567
(2018/03/23)
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- Highly enantioselective synthesis of 2,3-dihydro-1 H-imidazo[2,1-a isoindol-5(9b H)-ones via catalytic asymmetric intramolecular cascade imidization-nucleophilic addition-lactamization
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Highly enantioselective catalytic asymmetric intramolecular cascade imidization-nucleophilic addition-lactamization of N1-alkylethane-1,2-diamine with methyl 2-formylbenzoate catalyzed by a chiral phosphoric acid represents the first efficient method for the preparation of medicinally interesting chiral 2,3-dihydro-1H-imidazo[2,1-a]isoindol-5(9bH)-ones with high yields and excellent enantioselectivities. This strategy has been shown to be quite general toward various methyl 2-formylbenzoates.
- He, Yuwei,Cheng, Chuyu,Chen, Bin,Duan, Kun,Zhuang, Yue,Yuan, Bo,Zhang, Meisan,Zhou, Yougui,Zhou, Zihong,Su, Yu-Jun,Cao, Rihui,Qiu, Liqin
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p. 6366 - 6369
(2015/01/16)
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- 1-carbalkoxyalkyl-3-aryloxy-4-(substituted-2'-carboxyphenyl)-azet-2-ones as plant growth regulators and herbicides
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Compounds of the formula: STR1 wherein R1 is lower alkyl or benzyl; R2 is lower alkoxy, benzyloxy or the group STR2 where R3 is lower alkoxy; Ar is phenyl or phenyl substituted with 1 to 3 substituents independently selected from halogen, trihalomethyl, nitro, phenyl, lower alkoxy and lower alkyl; and X1 and X2 are independently hydrogen, halogen, lower alkoxy, or lower alkyl, or X1 and X2 taken together form an aromatic ring fused with the phenyl ring, provided that both X1 and X2 are not hydrogen show activity as plant growth regulators.
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