- Phosphine-Catalyzed Interrupted Morita–Baylis–Hillman Reaction and Switchable Domino Reactions of α-Substituted Activated Olefins with Formaldehyde and Mechanism Elucidation
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3-Olefinic oxindoles can undergo interrupted Morita-Baylis-Hillman reaction with formaldehyde. Apart from the previous reported dephosphoration to access reductive aldol-type products, here we uncovered that completely different pathways were followed by tuning the substitutions of 3-olefinic oxindoles. In combination with formalin, an unexpected domino phosphorus-ylide formation, aldol-type addition, hemeacetal formation and O-substitution process was observed to produce 1,3-dioxolane derivatives. Moreover, a switchable sequence to produce formate derivatives via a key hydride transfer process was furnished by simply replacing formalin with paraformaldehyde. Density functional theory calculations were conducted to well elucidate the catalytic reaction mechanism.
- Gu, Jing,Xiao, Ben-Xian,Ouyang, Qin,Du, Wei,Chen, Ying-Chun
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p. 155 - 160
(2019/01/21)
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- Synthesis, spectroscopic characterization, and in vitro antimicrobial potency of sulfur-bonded complexes of boron(III)
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The present article describes the synthesis and characterization of tetracoordinated boron (III) complexes with monobasic bidentate ligands (L 1H, L2H, L3H, L4H, L5H, and L6H) having the ge
- Swami, Monika,Mahajan, Karuna,Gupta, Neeti,Singh,Arya, Sunita,Kushwah, Sonalika
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experimental part
p. 2125 - 2139
(2010/02/28)
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