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1,4-Pentadien-3-one, 1,5-bis(2-ethynylphenyl)-, (E,E)- is a complex organic compound characterized by a 1,4-pentadien-3-one backbone, with two 2-ethynylphenyl groups attached at the 1 and 5 positions. The compound is known for its unique structure, where the pentadienone core is flanked by two ethynylphenyl groups, each featuring a triple bond (acetylene linkage). The (E,E)- configuration indicates that both ethynylphenyl groups are oriented in the same direction, which can influence the compound's physical and chemical properties. This molecule is of interest in organic chemistry and materials science due to its potential applications in the synthesis of various compounds and its unique electronic and structural characteristics.

55077-88-8

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55077-88-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55077-88-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,0,7 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 55077-88:
(7*5)+(6*5)+(5*0)+(4*7)+(3*7)+(2*8)+(1*8)=138
138 % 10 = 8
So 55077-88-8 is a valid CAS Registry Number.

55077-88-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name 1,5-bis(2-ethynylphenyl)penta-1,4-dien-3-one

1.2 Other means of identification

Product number -
Other names 1,5-Bis-(o-aethinylphenyl)-1,4-pentadien-3-on

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:55077-88-8 SDS

55077-88-8Relevant academic research and scientific papers

The Synthesis of Some Thiophenophanes and Attempted Cyclisations to Polycyclic Thiophenium Salts

Acheson, R. Morrin,Lee, Gary C. M.

, p. 2321 - 2332 (2007/10/02)

5,10-Diphenylcyclotrideca-2,4,10,12-tetraene-6,8-diyn-1-one (28), 5,6,7,8-tetrahydrodibenzocyclotridecen-15-one (21), and 13,14,16,17-tetrahydro-5,6,7,8-tetradehydrodibenzocyclotridecen-15-one (40) were synthesized.All attempts to add hydrogen sulphide across the triple bonds of these compounds to give thiophenes failed. 13,14,16,17-Tetrahydro-5,8-epithiodibenzocyclotridecen-15-one (43), from which hydrogen sulphide was removed by DDQ or chloroanil to give the ketone (40), was synthesized via the copper(II) acetate oxidation of 1,5-bis(2-ethynylphenyl)pentan-3-one (36).This ketone was obtained from 2-iodobenzaldehyde which on successive treatment with acetone, and ethynyltrimethylsilane yielded 1,5-bis(2-trimethylsilylethynylphenyl)penta-1,4-dien-3-one (18).Tributyltin hydride reduced the vinyl double bonds only in this ketone, and subsequent hydrolysis gave the ketone (36).Reduction of the cyclic ketone (40) with sodium borohydride gave the alcohol (41), sodium sulphide converted the diyne grouping into a thiophene ring giving the thiophene alcohol (42), and chromic acid now yielded the ketone (43).Attempts to convert this alcohol (42) and ketone (43) into pentacyclic sulphonium salts or related compounds resulted in elimination of oxygen and the formation of olefins.

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