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General and convenient route to alkenylidenecyclopropanes: generation of alkenylidenecarbenes from 1,1-dibromocyclopropanes under phase-transfer conditions
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Alkenylidenecyclopropanes have been prepared in a stereospecific manner by the reaction of 1,1-disubstituted 2,2-dibromocyclopsanes with sodium hydroxide under phase-transfer conditions in the presence of alkenes as discussed by the authors.Abstract:
Alkenylidenecyclopropanes have been prepared in a stereospecific manner by the reaction of 1,1-disubstituted 2,2-dibromocyclopropanes with sodium hydroxide under phase-transfer conditions in the presence of alkenes.read more
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Allenes from cyclopropanes and their use in organic synthesis-recent developments.
TL;DR: During the past 40 years or so the allenyl group has developed from almost a rarity to an important and versatile synthon in organic synthesis, and this development is clearly reflected in the steady flow of books and reviews dealing with the reactivity of this threecarbon unit.
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Strained small rings in gold-catalyzed rapid chemical transformations
Bei-Li Lu,Lunzhi Dai,Min Shi +2 more
TL;DR: The rapid construction of interesting building blocks in organic synthesis from strained small rings catalyzed by gold has been summarized in this review (106 references).
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Chemistry of Vinylidenecyclopropanes
TL;DR: This poster presents a probabilistic procedure for determining the chiral stationary phase of Na6(CO3)(SO4)2, which has shown good chiral recognition ability and has shown the ability to change its racemates over time to form Na2SO4 and Na2O.
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Manganese(III)-mediated oxidative annulation of methylenecyclopropanes with 1,3-dicarbonyl compounds.
Jin-Wen Huang,Min Shi +1 more
TL;DR: Manganese(III)-mediated oxidative annulation of methylenecyclopropanes with 1,3-dicarbonyl compounds in acetic acid produces 4,5-dihydrofuran derivatives as [3+2] annulation products in moderate to good yields under mild conditions.
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Lewis acid or Brønsted acid catalyzed reactions of vinylidene cyclopropanes with activated carbon-nitrogen, nitrogen-nitrogen, and iodine-nitrogen double-bond-containing compounds.
Jian-Mei Lu,Zhi-Bin Zhu,Min Shi +2 more
TL;DR: It is found that pyrrolidine and 1,2,3,4-tetrahydroquinoline derivatives can be formed in good yields in the reactions of VDCPs 1 with ethyl (arylimino)acetates 2 by a [3+2] cycloaddition or intramolecular Friedel-Crafts reaction pathway.
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Carbenes from Derivatives of Ethynylcarbinols. The Synthesis of Alkenylidenecyclopropanes1
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