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657-23-8

Tricyclic[3.2.1.0~2,4~]oct-6-ene is a complex organic compound with a unique cyclic structure. It consists of three fused rings, with the central ring being a cyclopropane ring, and the other two being cyclohexane rings. The compound has a double bond at the 6th position, which contributes to its reactivity and potential applications in various chemical reactions. This molecule is characterized by its high degree of strain due to the presence of the cyclopropane ring, which makes it an interesting subject for study in organic chemistry. It is typically synthesized through multi-step reactions and can be used as a building block for more complex molecules or as a precursor in the synthesis of pharmaceuticals and other specialty chemicals.

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657-23-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 657-23-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,5 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 657-23:
(5*6)+(4*5)+(3*7)+(2*2)+(1*3)=78
78 % 10 = 8
So 657-23-8 is a valid CAS Registry Number.

657-23-8Downstream Products

657-23-8Relevant articles and documents

Palladium-catalyzed cyclopropanation of alkenyl silanes by diazoalkanes: Evidence for a Pd0 mechanism

Berthon-Gelloz, Guillaume,Marchant, Melanie,Straub, Bernd F.,Marko, Istvan E.

body text, p. 2923 - 2931 (2009/12/01)

Alkenyl silanes are efficiently converted to the corresponding silyl cyclopropanes in the presence of a slight excess of diazomethane (2-4 equiv) and a low loading of Pd(OAc)2 (-3 mol%, which corresponds to a turnover frequency of 40000 h-1. Competition experiments revealed that vinyl silanes can be selectively cyclopropanated in the presence of an aliphatic terminal alkene and styrene. The complex [Pd 20(DVTMS)3] (38, DVTMS = divinyltetramethyldisiloxane) proved to be an exceptionally active catalyst for the cyclopropanation reaction, giving complete conversion at -35 °C in 1 min. Intermolecular and intramolecular competition experiments with DVTMS (36), both with Pd(OAc)2 and 38, provided strong evidence for a Pd 0(alkenyl silane)3 resting state. Detailed density functional calculations on the reaction pathways for the cyclopropanation of trimethylvinylsilane and DVTMS by diazomethane with Pd0 corroborated the experimental observations.

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