Differential Reactivity Pattern of Hybrid o-Quinodimethane Precursors: Strategic Expansion to Annulated Benzocycloalkanes via Rongalite
摘要:
A hybrid benzocyclobutene (BCB) molecular frames embedding sultine or sulfone moiety has been synthesized via utilization of rongalite. The selective Diels-Alder reaction has been realized at sultine or sulfone terminus in the hybrid BCB system to prepare functionalized BCB molecular frames. The methodology has been generalized for assembling various benzocycloalkanes containing a sultine unit and the strategy has been expanded to generate various annulated benzocycloalkanes.
thermal reaction of 1,4-bisallenes with the aid of Cu salt/amine significantly suppressed the formal [3,3] sigmatropic rearrangement resulting in the highly selective formation of the bicyclo[4.2.0]octadiene framework. This reaction could be applied to the one-pot synthesis of bicyclo[4.2.0]octadienes from 1,5-hexadiynes via the Crabbé homologation.
The effects of fullerene bisadduct regioisomers on solar cell performance have been examined for the first time and the two substituent positions on C60 have been found to have a large impact on the solar cell performance.
One-step synthesis of benzocyclobutenes involving cooligomerization of linear mono- and diacetylenes catalyzed by .eta.5-cyclopentadienylcobalt dicarbonyl
作者:K. Peter C. Vollhardt、Robert G. Bergman
DOI:10.1021/ja00822a052
日期:1974.7
Synthesis of Linearly and Angularly Fused Indane-Based Constrained α-Amino Acid Derivatives
benzocyclobutene-based α-aminoacidderivative, ethyl 5-acetamido-2,4,5,6-tetrahydro-1H-cyclobuta[f]indene-5-carboxylate is synthesized via coupling of a benzocyclobutene-derived dibromide with ethyl isocyanoacetate as the key step, followed by hydrolysis and subsequent acetylation. This methodology is generalized in order to prepare various linearly and angularly fused indane-based α-aminoacidderivatives. α-amino
通过将苯并环丁烯衍生的二溴化物与异氰基乙酸乙酯偶联,合成了基于苯并环丁烯的α-氨基酸衍生物5-乙酰氨基-2,4,5,6-四氢-1 H-环丁[ f ]茚5羧酸酯作为关键步骤,然后进行水解和后续的乙酰化反应。这种方法是为了制备各种线性和角度稠合茚满基-α广义-氨基酸衍生物。 α-氨基酸-[2 + 2 + 2]环加成-茚满基α-氨基酸-苯并环丁烯-异氰基乙酸乙酯-面向多样性的方法
Differential Reactivity Pattern of Hybrid <i>o</i>-Quinodimethane Precursors: Strategic Expansion to Annulated Benzocycloalkanes via Rongalite
作者:Sambasivarao Kotha、Priti Khedkar
DOI:10.1021/jo900658z
日期:2009.8.7
A hybrid benzocyclobutene (BCB) molecular frames embedding sultine or sulfone moiety has been synthesized via utilization of rongalite. The selective Diels-Alder reaction has been realized at sultine or sulfone terminus in the hybrid BCB system to prepare functionalized BCB molecular frames. The methodology has been generalized for assembling various benzocycloalkanes containing a sultine unit and the strategy has been expanded to generate various annulated benzocycloalkanes.