tert-butyl 2'-tert-butyl-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate

Base Information

• Chemical Name: tert-butyl 2'-tert-butyl-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate
• CAS No.: 1197815-67-0
• Molecular Formula: C19H29N3O4
• Molecular Weight: 363.457
• Hs Code.: 2934999090
• Mol file: 1197815-67-0.mol

Synonyms:tert-butyl 2'-tert-butyl-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate

Chemical Property of tert-butyl 2'-tert-butyl-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate

Chemical Property:

• PSA: 73.66000
• LogP: 3.31090
• Storage Temp.: 2-8°C

Purity/Quality:

97% ^*data from raw suppliers

tert-Butyl 2'-tert-butyl-7'-oxo-6',7'-dihydro-2'H-spiro-[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate 97% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
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MSDS Files:

SDS file from LookChem

Useful:

Technology Process of tert-butyl 2'-tert-butyl-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate

There total 3 articles about tert-butyl 2'-tert-butyl-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate 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: 84.0%

1-(1-(tert-butyl)-4-hydroxy-1H-pyrazol-3-yl)ethanone (1197815-66-9) + N-tert-butyloxycarbonylpiperidin-4-one (79099-07-3) → tert-butyl 2'-(tert-butyl)-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate (1197815-67-0)

Guidance literature:

With pyrrolidine; In methanol; for 18h; Reflux;

DOI:10.1021/jm201503u

Reference yield:

1-(2-(tert-butyl)hydrazono)propan-2-one → tert-butyl 2'-(tert-butyl)-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate (1197815-67-0)

Guidance literature:

Multi-step reaction with 2 steps

1: water / 5 h / Reflux

2: pyrrolidine / methanol / 18 h / Reflux

With pyrrolidine; In methanol; water;

DOI:10.1021/jm201503u

Reference yield:

(E)-1-(2-(tert-butyl)hydrazinylidene)propan-2-one → tert-butyl 2'-(tert-butyl)-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate (1197815-67-0)

Guidance literature:

Multi-step reaction with 2 steps

1: water / 5 h / Reflux

2: pyrrolidine / methanol / 24 h / Reflux

With pyrrolidine; In methanol; water;

upstream raw materials:

1-(1-(tert-butyl)-4-hydroxy-1H-pyrazol-3-yl)ethanone

N-tert-butyloxycarbonylpiperidin-4-one

Downstream raw materials:

2'-(tert-butyl)-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-7'(6'H)-one

2'-(tert-butyl)-1-(1H-indazole-5-carbonyl)-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazol]-7'(6'H)-one

2'-(tert-butyl)-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazol]-7'(6'H)-one hydrochloride

tert-butyl 6'-benzyl-N-tert-butyl-7'-oxo-6',7'-dihydro-2'H-spiro[piperidine-4,5'-pyrano[3,2-c]pyrazole]-1-carboxylate

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