2,2,4,4-tetramethylcyclopentenone (triphenylphosphoranylidene)hydrazone

Base Information

Chemical Name:2,2,4,4-tetramethylcyclopentenone (triphenylphosphoranylidene)hydrazone
CAS No.:82338-36-1
Molecular Formula:C₂₇H₂₉N₂P
Molecular Weight:412.514
Hs Code.:

Synonyms:

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Chemical Property of 2,2,4,4-tetramethylcyclopentenone (triphenylphosphoranylidene)hydrazone

Chemical Property:

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Technology Process of 2,2,4,4-tetramethylcyclopentenone (triphenylphosphoranylidene)hydrazone

There total 7 articles about 2,2,4,4-tetramethylcyclopentenone (triphenylphosphoranylidene)hydrazone 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:

: 933-52-8
2,2,4,4-tetramethyl-1,3-cyclobutanedione

: 82338-36-1
2,2,4,4-tetramethylcyclopentenone (triphenylphosphoranylidene)hydrazone

Guidance literature:: Multi-step reaction with 6 steps

1: 85 percent / diethyl ether / 96 h / Ambient temperature

2: 85 percent / NaBH₄ / ethanol / 3 h / -20 °C

3: pyridine / 2.5 h / 0 °C

4: 80 percent / Na/diethylene glycol / 130 - 160 °C / 20 Torr

5: 75 percent / hydrazine hydrate / bis-(2-hydroxy-ethyl) ether; ethanol / 120 h / Heating

6: 1.) Br₂, 2.) triethylamine / 1.) benzene, 30 min, 2.) room temperature, 8 h

With sodium tetrahydroborate; bromine; sodium; hydrazine hydrate; triethylamine; diethylene glycol; In pyridine; diethyl ether; ethanol; diethylene glycol;
DOI:10.1021/jo00139a042

Reference yield:

: 17346-16-6
2,4-dibromo-2,4-dimethylpentan-3-one

: 82338-36-1
2,2,4,4-tetramethylcyclopentenone (triphenylphosphoranylidene)hydrazone

Guidance literature:: Multi-step reaction with 3 steps

2: 75 percent / hydrazine hydrate / bis-(2-hydroxy-ethyl) ether; ethanol / 120 h / Heating

3: 1.) Br₂, 2.) triethylamine / 1.) benzene, 30 min, 2.) room temperature, 8 h

With bromine; hydrazine hydrate; triethylamine; In ethanol; diethylene glycol;
DOI:10.1021/jo00139a042

Reference yield:

: 31934-42-6
2,2,4,4-tetramethyl-cyclopentane-1,3-dione

: 82338-36-1
2,2,4,4-tetramethylcyclopentenone (triphenylphosphoranylidene)hydrazone

Guidance literature:: Multi-step reaction with 5 steps

1: 85 percent / NaBH₄ / ethanol / 3 h / -20 °C

2: pyridine / 2.5 h / 0 °C

3: 80 percent / Na/diethylene glycol / 130 - 160 °C / 20 Torr

4: 75 percent / hydrazine hydrate / bis-(2-hydroxy-ethyl) ether; ethanol / 120 h / Heating

5: 1.) Br₂, 2.) triethylamine / 1.) benzene, 30 min, 2.) room temperature, 8 h

With sodium tetrahydroborate; bromine; sodium; hydrazine hydrate; triethylamine; diethylene glycol; In pyridine; ethanol; diethylene glycol;
DOI:10.1021/jo00139a042