61795-72-0

Basic information

• Product Name: 5H-Tetrazol-5-one, 1,2-dihydro-1-methyl-
• Synonyms: 5H-Tetrazol-5-one,1,2-dihydro-1-methyl
• CAS NO: 61795-72-0
• Molecular Formula: C2H4N4O
• Molecular Weight: 100.08
• Mol File: 61795-72-0.mol
• Article Data: 4

Chemical Properties

• Melting Point: 122 °C
• Boiling Point: 95.4±23.0 °C(Predicted)
• Density: 1.75±0.1 g/cm3(Predicted)
• CAS DataBase Reference: 5H-Tetrazol-5-one, 1,2-dihydro-1-methyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 5H-Tetrazol-5-one, 1,2-dihydro-1-methyl-(61795-72-0)
• EPA Substance Registry System: 5H-Tetrazol-5-one, 1,2-dihydro-1-methyl-(61795-72-0)

Safety Data

• Hazardous Substances Data: 61795-72-0(Hazardous Substances Data)

Usage

Chemical class

Tetrazoles

Stability

Unstable and highly reactive

Occurrence

Not commonly found in nature

Uses

Building block or intermediate in the synthesis of pharmaceuticals and agrochemicals

Properties

Useful precursor for the synthesis of biologically active compounds

Applications

Development of new drugs and pesticides

Upstream product

• 5422-44-6 1-methyl-5-amino-1H-tetrazole 
• 16681-79-1 5-bromo-1-methyl-1H-tetrazole 
• 513-81-5 2,3-dimethyl-buta-1,3-diene 
• 320603-09-6 1-Methyl-5-p-tolyloxy-1H-tetrazole 
• 13183-79-4 1-methyl-1,4-dihydro-tetrazole-5-thione 
• 75-36-5 acetyl chloride 

Downstream Products

• 13576-20-0 5-oxo-1,4-dimethyl-1,4-dihydro-5H-tetrazole 
• 1309832-24-3 3-(4,5-dihydro-4-methyl-5-oxotetrazol-1-yl)-5-nitrobenzonitrile 
• 1067924-70-2 1-{2-bromo-4-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl]benzyl}-4-methyl-1,4-dihydro-5H-tetrazol-5-one 

Relevant articles and documents

Novel Type Elimination Reactions of Sulfoxides Bearing Several Heteroaromatics: Trapping of Sulfines with 2,3-Dimethyl-1,3-butadiene

Previously we reported the novel thioaldehydes generation via thermolyses of phenacyl sulfoxides bearing some heteroaromatics. Thermolysis of sulfoxides (1a,b and 2a-4a) bearing other heterocycles such as thiadiazole, triazole, and tetrazole in the presence of 2,3-dimethyl-1,3-butadiene in dioxane at 100 °C led to the unexpected products 6-substituted-5,6-dihydro-3,4-dimethyl-2H-thiapyran 1-oxide (5a,b). These products were considered to be formed by the Diels-Alder reaction of the diene with the sulfines formed initially by the thermal decomposition of the sulfoxides. The rate acceleration and the improvement of the yield by addition of 1.5 equiv of triethylamine, especially in the case of ethoxycabonylmethyl sulfoxide 1c, was observed. The cis-trans selectivity for sulfine cycloadducts was also studied by NMR spectrometry. The reactions of α-substituted phenacyl sulfoxides 1d-f bearing a phenyl-substituted tetrazolyl group in the presence of the same diene were also studied.

Process for the preparation of 1-substituted-5(4H)-tetrazolinones

A process for the preparation of a 1-substituted-5(4H)-tetrazolinone of the formula STR1 wherein R1 is defined in the specification n is 0, 1, 2, 3 or 4, which comprises reacting a 1-substituted-5(4H)-tetrazolinethione of the formula STR2 with an ethylene oxide of the formula STR3 wherein R2 represents hydrogen, methyl or ethyl, in the presence of a base and in the presence of water, an alcohol or a mixture thereof.