7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid

Base Information

Chemical Name:7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid
CAS No.:1623023-33-5
Molecular Formula:C₁₈H₁₆N₂O₂S
Molecular Weight:324.403
Hs Code.:

Synonyms:7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid

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Chemical Property of 7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid

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Technology Process of 7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid

There total 6 articles about 7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 97.0%

: 1623023-30-2
ethyl 7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylate

: 1623023-33-5
7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid

Guidance literature:: With water; sodium hydroxide; In ethanol; at 80 ℃; for 5h;
DOI:10.1016/j.ejmech.2014.08.042

Reference yield:

: 5834-14-0
3-(4-methyl-thiophen-2-yl)-acrylic acid

: 1623023-33-5
7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid

Guidance literature:: Multi-step reaction with 5 steps

1: hydrogen; palladium(II) hydroxide / ethanol / 18 h / 25 °C / 775.74 Torr

2: polyphosphoric acid / 1 h / 75 °C

3: sodium; ethanol / 5 h / 20 °C

4: acetic acid / 8 h / 110 °C

5: sodium hydroxide; water / ethanol / 5 h / 80 °C

With ethanol; water; hydrogen; sodium; palladium(II) hydroxide; acetic acid; sodium hydroxide; In ethanol; 3: |Claisen Condensation;
DOI:10.1016/j.ejmech.2014.08.042

Reference yield:

: 6030-36-0
4-methylthiophene-2-carbaldehyde

: 1623023-33-5
7-methyl-1-(4-methylbenzyl)-1,4-dihydrothieno[2',3'-4,5]cyclopenta[1,2c]pyrazole-3-carboxylic acid

Guidance literature:: Multi-step reaction with 6 steps

1: piperidine; pyridine / 115 °C

2: hydrogen; palladium(II) hydroxide / ethanol / 18 h / 25 °C / 775.74 Torr

3: polyphosphoric acid / 1 h / 75 °C

4: sodium; ethanol / 5 h / 20 °C

5: acetic acid / 8 h / 110 °C

6: sodium hydroxide; water / ethanol / 5 h / 80 °C

With piperidine; pyridine; ethanol; water; hydrogen; sodium; palladium(II) hydroxide; acetic acid; sodium hydroxide; In ethanol; 4: |Claisen Condensation;
DOI:10.1016/j.ejmech.2014.08.042