71778-01-3 Usage
Structure
Contains a 5-membered thiophene ring attached to a 3-membered α-pyrone ring, with a phenyl group attached to the carbon adjacent to the α-pyrone ring.
Physical properties
Yellow to light brown liquid at room temperature, strong odor.
Uses
Building block for the synthesis of pharmaceuticals, agrochemicals, organic electronics, and optoelectronic materials.
Hazards
Flammable, can cause skin and eye irritation upon contact.
Check Digit Verification of cas no
The CAS Registry Mumber 71778-01-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,7 and 8 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 71778-01:
(7*7)+(6*1)+(5*7)+(4*7)+(3*8)+(2*0)+(1*1)=143
143 % 10 = 3
So 71778-01-3 is a valid CAS Registry Number.
71778-01-3Relevant articles and documents
Cobalt-catalyzed intermolecular hydroacylation of olefins through chelation-assisted imidoyl C-H activation
Yang, Junfeng,Seto, Yuan Wah,Yoshikai, Naohiko
, p. 3054 - 3057 (2015/05/20)
A low-valent cobalt catalyst generated from cobalt(II) bromide, a diphosphine ligand, and zinc powder promotes intermolecular hydroacylation of olefins using N-3-picolin-2-yl aldimines as aldehyde equivalents, which affords, upon acidic hydrolysis, ketone products in moderate to good yields with high linear selectivity. The reaction is applicable to styrenes, vinylsilanes, and aliphatic olefins as well as to various aryl and heteroaryl aldimines. The cobalt catalysis features a distinctively lower reaction temperature (60 °C) compared with those required for the same type of transformations catalyzed by rhodium complexes (typically 130-150°C).
