1,2,2',3',5',6'-Hexahydrospiro[indole-3,4'-pyran]

Base Information

• Chemical Name: 1,2,2',3',5',6'-Hexahydrospiro[indole-3,4'-pyran]
• CAS No.: 859164-46-8
• Molecular Formula: C12H15NO
• Molecular Weight: 189.257
• Hs Code.: 2934999090
• Mol file: 859164-46-8.mol

Synonyms:spiro[1,2-dihydroindole-3,4'-oxane;1,2-Dihydrospiro[indole-3,4'-oxane];2',3',5',6'-tetrahydrospiro[indoline-3,4'-pyran];1,2,2',3',5',6'-HEXAHYDROSPIRO[INDOLE-3,4'-PYRAN];1,2,2′,3′,5′,6′-Hexahydrospiro[3H-indole-3,4′-[4H]pyran]

Chemical Property of 1,2,2',3',5',6'-Hexahydrospiro[indole-3,4'-pyran]

Chemical Property:

• PSA: 21.26000
• LogP: 2.29830

Purity/Quality:

97% ^*data from raw suppliers

spiro[1,2-dihydroindole-3,4''-oxane] ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn
• Hazard Codes: Xn
• Statements: 22

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 1,2,2',3',5',6'-Hexahydrospiro[indole-3,4'-pyran]

There total 1 articles about 1,2,2',3',5',6'-Hexahydrospiro[indole-3,4'-pyran] 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: 49.0%

3,4,5,6-tetrahydro-2H-pyran-4-carbaldehyde (50675-18-8) + phenylhydrazine (100-63-0) → 2’,3’,5’,6’-tetrahydrospiro[indoline-3,4’-pyran] (859164-46-8)

Guidance literature:

3,4,5,6-tetrahydro-2H-pyran-4-carbaldehyde; phenylhydrazine; With acetic acid; at 80 ℃;

With sodium tris(acetoxy)borohydride; In 1,2-dichloro-ethane; at 20 ℃; Cooling;

DOI:10.1016/j.tet.2009.11.080

Reference yield:

2’,3’,5’,6’-tetrahydrospiro[indoline-3,4’-pyran] (859164-46-8) → methyl 4-[1-(spiro[indoline-3,4’-tetrahydropyran]-7-carbonylamino)cyclopropyl]benzoate

Guidance literature:

Multi-step reaction with 4 steps

1.1: triethylamine / dichloromethane / 5 h / 0 - 20 °C

2.1: N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium / tetrahydrofuran; cyclohexane / 1 h / -78 °C / Inert atmosphere

2.2: 0.22 h

3.1: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / acetonitrile / 2 h / 0 - 20 °C

4.1: trifluoroacetic acid / dichloromethane / 2 h / 0 - 20 °C

With N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium; triethylamine; N-ethyl-N,N-diisopropylamine; trifluoroacetic acid; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; In tetrahydrofuran; dichloromethane; cyclohexane; acetonitrile;

Reference yield:

2’,3’,5’,6’-tetrahydrospiro[indoline-3,4’-pyran] (859164-46-8) → tert-butyl 7-[[1-(4-methoxycarbonylphenyl)cyclopropyl]carbamoyl]spiro[indoline-3,4’-tetrahydropyran]-1-carboxylate

Guidance literature:

Multi-step reaction with 3 steps

1.1: triethylamine / dichloromethane / 5 h / 0 - 20 °C

2.1: N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium / tetrahydrofuran; cyclohexane / 1 h / -78 °C / Inert atmosphere

2.2: 0.22 h

3.1: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / acetonitrile / 2 h / 0 - 20 °C

With N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium; triethylamine; N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; In tetrahydrofuran; dichloromethane; cyclohexane; acetonitrile;

upstream raw materials:

3,4,5,6-tetrahydro-2H-pyran-4-carbaldehyde

phenylhydrazine