The reaction of active methylene compounds with carbon disulfide in the presence of arylidenemalononitriles: synthesis of 6-amino-2-(4,4-dimethyl/dihydro-2,6-dioxocyclohexylidene)-4-aryl-4H-1,3-dithiine-5-carbonitrile derivatives

2018 ◽  
Vol 39 (2) ◽  
pp. 164-172 ◽  
Author(s):  
Hossein Mehrabi ◽  
Zeinab Esfandiarpour ◽  
Tayebeh Davodian
Keyword(s):  
Carbon Disulfide ◽  
Active Methylene Compounds ◽  
Active Methylene

scholarly journals Application of Commercially Available Anhydrous Potassium Fluoride for a Convenient Synthesis of Ketene Dithioacetals

1999 ◽  
Vol 23 (8) ◽  
pp. 492-493
Author(s):  
Sabir H. Mashraqui ◽  
Harini Hariharasubrahmanian
Keyword(s):  
Carbon Disulfide ◽  
Alkylating Agent ◽  
Potassium Fluoride ◽  
Solid Support ◽  
Ambient Conditions ◽  
Ketene Dithioacetals ◽  
Convenient Synthesis ◽  
Active Methylene Compounds ◽  
Active Methylene

Commercially available anhydrous KF without activation or solid support promotes condensation between active methylene compounds, carbon disulfide and an alkylating agent in dry DMF to allow the preparation of a variety of ketene dithioacetals in fair to good yields under ambient conditions.

Carbon Disulfide. III. Reaction with Active Methylene Compounds. The Infrared and Ultraviolet Spectra of the Desaurins

1971 ◽  
Vol 49 (9) ◽  
pp. 1467-1476 ◽  
Author(s):  
Peter Yates ◽  
Thomas R. Lynch ◽  
Donald R. Moore
Keyword(s):  
Carbon Disulfide ◽  
Strong Interaction ◽  
Fermi Resonance ◽  
Carbonyl Groups ◽  
Ultraviolet Spectra ◽  
Weak Intensity ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
Related Compounds

The position of the carbonyl-stretching bands in the i.r. spectra of the desaurins, 2,4-bis(acylmethylene)- and 2,4-bis(carboxymethylene)-1,3-dithetane derivatives, establishes that there is a strong interaction between the sulfur atoms and the carbonyl groups. This is considered to involve mainly conjugative interaction rather than interaction through space, although the latter may account for the abnormally weak intensity of the carbonyl-stretching bands. These bands are split in the case of several desaurins and related compounds, and evidence has been obtained in one case that the splitting is due to Fermi resonance. The u.v. spectra of the desaurins and related compounds also indicate a strong conjugative interaction between the sulfur atoms and the carbonyl groups.

The reaction of active methylene compounds with carbon disulfide in the presence of ammonia. I. The reaction of cyclohexanone

1967 ◽  
Vol 32 (4) ◽  
pp. 980-984 ◽  
Author(s):  
Tatsuo Takeshima ◽  
Toshio Hayashi ◽  
Motomu Muraoka ◽  
Takahiro Matsuoka
Keyword(s):  
Carbon Disulfide ◽  
Active Methylene Compounds ◽  
Active Methylene

Reaction of active methylene compounds with carbon disulfide in the presence of ammonia. III. Reaction of cyclopentanone and cycloheptanone

1969 ◽  
Vol 34 (3) ◽  
pp. 730-732 ◽  
Author(s):  
Tatsuo Takeshima ◽  
Masataka Yokoyama ◽  
Tsuneo Imamoto ◽  
Makiko Akano ◽  
Hiroe Asaba
Keyword(s):  
Carbon Disulfide ◽  
Active Methylene Compounds ◽  
Active Methylene

Sulfur-containing polymers from terpolymerization of active methylene compounds, carbon disulfide, and dihalohydrocarbons: synthesis and properties

2019 ◽  
Vol 10 (39) ◽  
pp. 5333-5338 ◽  
Author(s):  
Chen Zhao ◽  
Xianghe Meng ◽  
Rou Lu ◽  
Haiming Xie ◽  
Jun Liu
Keyword(s):  
Refractive Index ◽  
Carbon Disulfide ◽  
High Refractive Index ◽  
Molecular Weights ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
Sulfur Containing

Sulfur-containing polymers with a high refractive index were synthesized via terpolymerization of active methylene compounds, CS2, and dihalohydrocarbons in excellent yields with high molecular weights.

Carbon Disulfide. IV. Reaction with Active Methylene Compounds. The Formation of 3,5-Bismethylene-1,2,4-trithiolanes

1971 ◽  
Vol 49 (9) ◽  
pp. 1477-1488 ◽  
Author(s):  
Peter Yates ◽  
Thomas R. Lynch
Keyword(s):  
Carbon Disulfide ◽  
Sulfur Compounds ◽  
Carbonyl Groups ◽  
Geometrical Isomers ◽  
Active Methylene Compounds ◽  
Active Methylene

The three-sulfur compounds formed on oxidation of the β-keto dithio acids prepared by the reaction of active methylene compounds with base and carbon disulfide have been shown to be 3,5-bis(acylmethylene)-1,2,4-trithiolane derivatives. In several cases, two of the three possible geometrical isomers have been isolated and provisional stereochemical assignments have been made. The i.r. and u.v. spectra of the trithiolanes have been compared with those of corresponding 2,4-bis(acylmethylene)-1,3-dithie-tane derivatives (desaurins) and interpreted in terms of a strong conjugative interaction between the sulfur atoms and carbonyl groups.

Reaction of Carbon Disulfide with Active Methylenes: Novel Synthesis of Thiophene, Thieno[2,3-b]thiophene, Thieno[3,2-c]pyrazole and Thieno[3,2-b]pyridine Derivatives

1995 ◽  
Vol 60 (9) ◽  
pp. 1578-1586 ◽  
Author(s):  
Rafat M. Mohareb ◽  
Sherif M. Sherif ◽  
Adiba Habashi ◽  
Nadia I. Abdel-Sayed ◽  
Samia S. Osman
Keyword(s):  
Carbon Disulfide ◽  
Potassium Hydroxide ◽  
Dimethyl Formamide ◽  
Pyridine Derivatives ◽  
Novel Synthesis ◽  
Oxobutanoic Acid ◽  
Active Methylene Compounds ◽  
Derivatives Of ◽  
Active Methylene

The active methylene compounds - derivatives of malonic or 4-oxobutanoic acid - reacted with carbon disulfide in dimethyl formamide containing potassium hydroxide to yield the non-isolable dipotassium disulfide intermediates. The latter were cyclized by α-haloketones to give thiophene, thieno[2,3-b]thiophene, thieno[3,2-c]pyrazole and thieno[3,2-b]pyridine derivatives. The reactivity of the products toward various reagents was studied.

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