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Mayr H, Hartnagel M, Ofial AR. Elucidation of the Nucleophilic Potential of Diazocyclopentadiene. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0041-1737327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractDiazocyclopentadiene reacts with benzhydrylium ions (Ar2CH+) to give 2,5-dibenzhydryl-substituted diazocyclopentadienes. The kinetics have been determined photometrically in dichloromethane under pseudo-first-order conditions using diazocyclopentadiene in excess. Plots of the second-order rate constants (log k
2) versus the electrophilicity parameters E of the benzhydrylium ions gave the nucleophilicity parameter N = 4.84 and susceptibility s
N = 1.06 for diazocyclopentadiene according to the correlation log k(20 °C) = s
N(E + N). Diazocyclopentadiene thus has a similar nucleophilic reactivity as pyrrole. Previously reported electrophilic substitutions of diazocyclopentadiene are rationalized by these parameters and new reaction possibilities are predicted.
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Michelot D, Linstrumelle G, Julia S. Synthesis of 2, 5, 5-Trimethylhepta-2, 6-Dien-4-One (Artemisia Ketone) I. Using a Rearrangement of an Intermediate Sulfonium Ylide. SYNTHETIC COMMUN 2009. [DOI: 10.1080/00397917709410062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Menchikov LG, Nefedov OM. Spiro[2.4]hepta-4,6-dienes: synthesis and chemical reactions. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1994v063n06abeh000097] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Schumann H, Karasiak DF, Mühle SH, Halterman RL, Kaminsky W, Weingarten U. Synthesis and characterization of 1- and 2-(ω-alken-1-yl)indenes, their lithium salts and dichlorozirconium(IV) complexes. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00026-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Iwamura H, Imahashi Y, Kushida K, Aoki K, Satoh S. Mechanism of the Reaction of Methoxycarbonylcarbene as Revealed by CIDNP. V. Thermal Reaction of Methyl Diazoacetate with Benzyl Ethers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1976. [DOI: 10.1246/bcsj.49.1690] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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