Cas no 930785-40-3 (Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate)

Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate is a spirocyclic compound featuring a fused oxa-diaza ring system, which serves as a valuable intermediate in organic synthesis and medicinal chemistry. Its rigid spirocyclic structure enhances stereochemical control, making it useful for constructing complex heterocycles. The tert-butyloxycarbonyl (Boc) protecting group ensures stability under various reaction conditions while allowing selective deprotection when needed. This compound is particularly advantageous in the development of pharmaceuticals, where its scaffold can contribute to improved bioavailability and target selectivity. Its synthetic versatility and stability make it a preferred choice for researchers working on bioactive molecule design.
Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate structure
930785-40-3 structure
Product Name:Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate
CAS No:930785-40-3
MF:C13H24N2O3
MW:256.341263771057
MDL:MFCD11227065
CID:822462
PubChem ID:53302318
Update Time:2025-10-17

Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate Chemical and Physical Properties

Names and Identifiers

    • 9-Boc-1-oxa-4,9-diazaspiro[5.5]undecane
    • tert-Butyl 1-oxa-4,9-diazaspiro-[5.5]undecane-9-carboxylate
    • tert-butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate
    • 1-oxa-4,9-diaza-spiro[5.5]undecane-9-carboxylic acid tert-butyl ester
    • WT1154
    • 1-OXA-4,9-DIAZASPIRO[5.5]UNDECANE-9-CARBOXYLIC ACID, 1,1-DIMETHYLETHYL ESTER
    • FRROFBJYHIEDPS-UHFFFAOYSA-N
    • PB22496
    • FCH1626034
    • 1,1-Dimethylethyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate (ACI)
    • tert-Butyl1-oxa-4,9-diazaspiro[5.5]undecan-9-carboxylate
    • Z1302367988
    • CS-W005674
    • 9-Boc-1-oxa-4 pound not9-diazaspiro[5.5]undecane
    • SY096851
    • SDCCGSBI-0663179.P001
    • AC-31611
    • 930785-40-3
    • SCHEMBL996189
    • EN300-113744
    • J-519494
    • DTXSID20693372
    • ALBB-027710
    • MFCD11227065
    • AKOS015900842
    • DS-12165
    • DB-079478
    • TERT-BUTYL1-OXA-4,9-DIAZASPIRO[5.5]UNDECANE-9-CARBOXYLATE
    • Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate
    • MDL: MFCD11227065
    • Inchi: 1S/C13H24N2O3/c1-12(2,3)18-11(16)15-7-4-13(5-8-15)10-14-6-9-17-13/h14H,4-10H2,1-3H3
    • InChI Key: FRROFBJYHIEDPS-UHFFFAOYSA-N
    • SMILES: O=C(N1CCC2(CNCCO2)CC1)OC(C)(C)C

Computed Properties

  • Exact Mass: 256.17900
  • Monoisotopic Mass: 256.179
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 1
  • Hydrogen Bond Acceptor Count: 4
  • Heavy Atom Count: 18
  • Rotatable Bond Count: 2
  • Complexity: 304
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Topological Polar Surface Area: 50.8
  • XLogP3: 0.7

Experimental Properties

  • Color/Form: White to Yellow Solid
  • Density: 1.11
  • Melting Point: No data available
  • Boiling Point: 364.2°C at 760 mmHg
  • Flash Point: 174.1±27.9 °C
  • Refractive Index: 1.514
  • PSA: 50.80000
  • LogP: 1.64260
  • Vapor Pressure: 0.0±0.8 mmHg at 25°C

Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate Security Information

Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate Customs Data

  • HS CODE:2934999090
  • Customs Data:

    China Customs Code:

    2934999090

    Overview:

    2934999090. Other heterocyclic compounds. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:6.5%. general tariff:20.0%

    Declaration elements:

    Product Name, component content, use to

    Summary:

    2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate Pricemore >>

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Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate Production Method

Production Method 1

Reaction Conditions
1.1 Reagents: (T-4)-Trihydro(tetrahydrofuran)boron Solvents: Tetrahydrofuran ;  0 °C; 12 h, 0 °C → reflux
Reference
Synthesis of 9-boc-1-oxo-4,9-diazaspiro[5,5]undecane
Shi, Hai-feng; Huang, Long-jiang, Huaxue Yu Shengwu Gongcheng, 2014, 31(7), 44-46

Production Method 2

Reaction Conditions
1.1 Reagents: (T-4)-Trihydro(tetrahydrofuran)boron Solvents: Tetrahydrofuran ;  rt; 2 h, reflux
1.2 Reagents: N,N,N′,N′-Tetramethylethylenediamine Solvents: Methanol ;  overnight, 78 °C
Reference
Spiro[piperidine-azacycle] derivatives as inhibitors of the renal outer medullary potassium channel and their preparation
, World Intellectual Property Organization, , ,

Production Method 3

Reaction Conditions
1.1 Reagents: (T-4)-Trihydro(tetrahydrofuran)boron Solvents: Tetrahydrofuran ;  rt; 2 h, 55 °C
1.2 Reagents: (Dimethyl sulfide)trihydroboron Solvents: Tetrahydrofuran ;  2 h, 55 °C; 55 °C → rt
1.3 Reagents: Methanol
1.4 Reagents: N,N′-Dimethylethylenediamine Solvents: Methanol ;  12 h, reflux; reflux → rt
Reference
Preparation of spirocyclic amide derivatives as muscarinic receptor antagonists and β-adrenoceptor agonists for the treatment of pulmonary disorders
, World Intellectual Property Organization, , ,

Production Method 4

Reaction Conditions
1.1 Reagents: Hydrogen Catalysts: Palladium Solvents: Methanol ;  12 h, 50 psi, 50 °C
Reference
Preparation of cyanophenoxycyclobutylcarbamoylphenylpiperidinylmethylpiperazinyldioxopiperidinylbenzamide derivatives and analogs for the targeted degradation of androgen receptor
, World Intellectual Property Organization, , ,

Production Method 5

Reaction Conditions
1.1 Catalysts: (Dimethyl sulfide)trihydroboron Solvents: Dimethyl sulfide ,  Tetrahydrofuran ;  rt; 6 h, 70 °C; 10 h, 25 °C
1.2 Solvents: Methanol ;  30 min, 25 °C
1.3 Reagents: N,N-Dimethylethylenediamine Solvents: Methanol ;  16 h, 70 °C
Reference
Preparation of spiropiperidine heterocycles and salts thereof as MAGL inhibitors useful in treatment of MAGL-mediated diseases
, World Intellectual Property Organization, , ,

Production Method 6

Reaction Conditions
1.1 Reagents: (Dimethyl sulfide)trihydroboron Solvents: Dimethyl sulfoxide ,  Tetrahydrofuran ;  6 h, 70 °C; 10 h, 25 °C
1.2 Reagents: Methanol ;  30 min, 25 °C
1.3 Reagents: 1,2-Ethanediamine, N1,N2-dimethyl-, hydrochloride (1:2) Solvents: Methanol ;  16 h, 70 °C
Reference
1,1,1-Trifluoro-3-hydroxyprop-2-yl carbamate and 1,1,1-trifluoro-4-hydrobut-2-yl carbamate derivatives as MAGL inhibitors and their preparation
, United States, , ,

Production Method 7

Reaction Conditions
1.1 Reagents: (Dimethyl sulfide)trihydroboron Solvents: Tetrahydrofuran ;  rt; 2 h, 55 °C
1.2 Reagents: N,N′-Dimethylethylenediamine Solvents: Methanol ;  overnight, reflux
Reference
Preparation of amide derivatives of 1-oxa-4,9-diazaspiroundecane compounds having multimodal activity against pain
, World Intellectual Property Organization, , ,

Production Method 8

Reaction Conditions
1.1 Reagents: (Dimethyl sulfide)trihydroboron Solvents: Tetrahydrofuran ;  rt; 2 h, 55 °C; 55 °C → rt
1.2 Reagents: N,N′-Dimethylethylenediamine Solvents: Methanol ;  rt; overnight, reflux
Reference
Preparation of 1-oxa-4,9-diazaspiroundecane compounds having multimodal activity against pain
, World Intellectual Property Organization, , ,

Production Method 9

Reaction Conditions
1.1 Reagents: (T-4)-Trihydro(tetrahydrofuran)boron Solvents: Tetrahydrofuran ;  2 h, reflux
1.2 Reagents: N,N,N′,N′-Tetramethylethylenediamine Solvents: Methanol ;  overnight, 78 °C
Reference
Preparation of novel spirocyclic compounds as inhibitors of the renal outer medullary potassium channel
, World Intellectual Property Organization, , ,

Production Method 10

Reaction Conditions
1.1 Reagents: (T-4)-Trihydro(tetrahydrofuran)boron Solvents: Tetrahydrofuran ;  2 h, 55 °C
1.2 Reagents: N,N,N′,N′-Tetramethylethylenediamine Solvents: Methanol ;  6 h, reflux
Reference
The discovery of new spirocyclic muscarinic M3 antagonists
Stocks, Michael J.; Alcaraz, Lilian; Bailey, Andrew; Bowers, Keith; Donald, David; et al, Bioorganic & Medicinal Chemistry Letters, 2010, 20(24), 7458-7461

Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate Raw materials

Tert-Butyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate Preparation Products

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