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8,9-Dihydro-5H-benzo[7]annulen-7(6H)-one is an organic compound with a unique chemical structure, characterized by its annulated ring system and ketone functional group. It is a key intermediate in the synthesis of various complex organic molecules and has potential applications in the pharmaceutical and chemical industries.

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  • 37949-03-4 Structure
  • Basic information

    1. Product Name: 8,9-Dihydro-5H-benzo[7]annulen-7(6H)-one
    2. Synonyms: 7-benzocycloheptanone;8,9-Dihydro-5H-benzo[7]annulen-7(6H)-one;6,7,8,9-Tetrahydro-5H-benzo[7]annulen-7-one;7H-Benzocyclohepten-7-one, 5,6,8,9-tetrahydro-;5,6,8,9-Tetrahydro-7H-benzocyclohepten-7-one;7-Oxo-6,7,8,9-tetrahydro-5H-benzo[7]annulene;8,9-Dihydro-5H-benzo[7]annulen-7(6H);3-Benzosuberone
    3. CAS NO:37949-03-4
    4. Molecular Formula: C11H12O
    5. Molecular Weight: 160
    6. EINECS: -0
    7. Product Categories: N/A
    8. Mol File: 37949-03-4.mol
  • Chemical Properties

    1. Melting Point: 38.5 °C
    2. Boiling Point: 288.2±29.0 °C(Predicted)
    3. Flash Point: N/A
    4. Appearance: /
    5. Density: 1.064±0.06 g/cm3(Predicted)
    6. Refractive Index: N/A
    7. Storage Temp.: Sealed in dry,Room Temperature
    8. Solubility: N/A
    9. CAS DataBase Reference: 8,9-Dihydro-5H-benzo[7]annulen-7(6H)-one(CAS DataBase Reference)
    10. NIST Chemistry Reference: 8,9-Dihydro-5H-benzo[7]annulen-7(6H)-one(37949-03-4)
    11. EPA Substance Registry System: 8,9-Dihydro-5H-benzo[7]annulen-7(6H)-one(37949-03-4)
  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 37949-03-4(Hazardous Substances Data)

37949-03-4 Usage

Uses

Used in Pharmaceutical Industry:
8,9-Dihydro-5H-benzo[7]annulen-7(6H)-one is used as a reactant for the preparation of benzo[7]annulen-7-amines with GluN2B affinity and selectivity. These benzo[7]annulen-7-amines are important compounds due to their potential therapeutic applications, particularly in the treatment of neurological disorders and conditions related to the GluN2B subunit of the NMDA receptor.

Check Digit Verification of cas no

The CAS Registry Mumber 37949-03-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,9,4 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 37949-03:
(7*3)+(6*7)+(5*9)+(4*4)+(3*9)+(2*0)+(1*3)=154
154 % 10 = 4
So 37949-03-4 is a valid CAS Registry Number.

37949-03-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 8,9-Dihydro-5H-benzo[7]annulen-7(6H)-one

1.2 Other means of identification

Product number -
Other names 5,6,8,9-tetrahydrobenzo[7]annulen-7-one

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:37949-03-4 SDS

37949-03-4Relevant articles and documents

Construction of Seven-Membered Carbocycles via Cyclopropanols

Ydhyam, Sridhar,Cha, Jin Kun

, p. 5820 - 5823 (2015)

A new method for seven-membered ring annulation has been devised by an intramolecular cross-coupling of cyclopropanols and aryl/alkenyl halides. This cyclization reaction is broad in scope and provides easy access to not only fused but also bridged bicycl

1H and 13C NMR Studies of Conformational Substituent Effect in 4- and 5-Monosubstituted Derivatives of Benzocycloheptene

Menard, D.,St-Jacques, M.

, p. 1041 - 1060 (1983)

Values of -ΔGo for the axialequatorial conformational equilibrium of the chair form of 5-substituted (2-8) and 4-substituted (9-14) derivativesof benzocycloheptene were measured from their 1H and/or 13C NMR spectra recorded under conditions of slow exchange (T 80 deg C).Strikingly different conformational substituent effects are noted in each series of compounds.The results are compared with equivalent parameters published for analogous six-membered cyclic derivatives and interpreted in terms of steric and electrostatic interactions.Substituent effects on 13C NMR chemical shifts were measured and are compared to those reported for the cyclohexane ring.

Two-carbon ring expansion of 1-indanones via insertion of ethylene into carbon-carbon bonds

Xia, Ying,Ochi, Shusuke,Dong, Guangbin

supporting information, p. 13038 - 13042 (2019/08/26)

A rhodium-catalyzed direct insertion of ethylene into a relatively unstrained carbon-carbon bond in 1-indanones is reported, which provides a two-carbon ring expansion strategy for preparing seven-membered cyclic ketones. As many 1-indanones are commercially available and ethylene is inexpensive, this strategy simplifies synthesis of benzocycloheptenones that are valuable synthetic intermediates for bioactive compounds but challenging to prepare otherwise. In addition, the reaction is byproduct-free, redox neutral, and tolerant of a wide range of functional groups, which may have implications on unconventional strategic bond disconnections for preparing complex cyclic molecules.

AXL INHIBITORS FOR USE IN COMBINATION THERAPY FOR PREVENTING, TREATING OR MANAGING METASTATIC CANCER

-

Paragraph 0779, (2019/11/21)

This invention is directed to methods of preventing, treating or managing cancer, preferably metastatic cancer, in a patient. The methods comprise administering an effective amount of an Axl inhibitor in combination with the administration of an effective

Bemcentinib: Rec INN

Gras

, p. 645 - 653 (2018/10/20)

Increased expression of Axl has been reported in various cancers including colon, esophageal, thyroid, breast, lung, liver and astrocytoma-glioblastoma. Cancer resistance to tyrosine kinase inhibitors and other chemotherapeutics has been correlated with a

Unexpected metal-free transformation of gem-dibromomethylenes to ketones under acetylation conditions

Kimura, Rino,Sawayama, Yusuke,Nakazaki, Atsuo,Miyamoto, Kazunori,Uchiyama, Masanobu,Nishikawa, Toshio

, p. 1035 - 1041 (2015/03/31)

Novel conditions for the transformation of gem-dibromomethylenes to ketones are described. gem-Dibromo compounds were treated with acetic anhydride and triethylamine in dichloromethane/water at room temperature under an air atmosphere to give the corresponding ketones in moderate yields. A radical mechanism is proposed based on experimental results.

Synthesis, GluN2B affinity and selectivity of benzo[7]annulen-7-amines

Gawaskar, Sandeep,Schepmann, Dirk,Bonifazi, Alessandro,Wünsch, Bernhard

, p. 6638 - 6646 (2015/02/19)

Due to their beneficial side effect profile, NMDA receptor antagonists interacting selectively with the allosteric ifenprodil binding site of the GluN2B subunit are of major interest for the treatment of neurological and neurodegenerative disorders. A series of benzo[7]annulen-7-amines 6 was designed by conformational restriction of ifenprodil (1). At first the benzo[7]annulen-7-one 11 was prepared in a three-step synthesis comprising of a double Knoevenagel condensation of phthalaldehyde (7) with dimethyl 3-oxoglutarate (8), hydrogenation of 9 and saponification/decarboxylation of 10. Reductive amination of the ketone 11 with primary amines and NaBH(OAc)3 led to the secondary amines 6a-d, cis-6h and trans-6i. The tertiary amines 6e-g were obtained by SN2-substitution of the nosylate 13. Although H-bond forming substituents in 2- and 5-position are missing, the amines 6 exhibit high affinity towards GluN2B containing NMDA receptors. A distance of four to five bond lengths between the basic amino moiety and the phenyl ring in the side chain appears to be optimal for high GluN2B affinity. The phenylcyclohexylamine cis-6h and the 4-benzylpiperidine 6g show the highest GluN2B affinities (Ki = 2.3 nM and 2.9 nM, respectively). With respect to selectivity against the PCP binding site, σ1 and σ2 receptors the phenylpiperazine 6f is the most promising GluN2B antagonist.

AMINOBENZOCYCLOHEPTENE DERIVATIVES, METHODS FOR PREPARING THE SAME AND USES THEREOF IN THERAPY

-

Page/Page column 5, (2010/04/23)

A compound of the general formula (I) as an active principle for treating cancer, specifically tumors, in particular diseases involving inhibition of metalloproteases, such as Aminopeptidase-N. Pharmaceutical compositions comprising the compound of general formula (I). Methods of treatment using the compound of general formula (I).

POLYCYCLIC HETEROARYL SUBSTITUTED TRIAZOLES USEFUL AS AXL INHIBITORS

-

Page/Page column 55-56, (2010/04/03)

Polycyclic heteroaryl substituted triazoles and pharmaceutical compositions containing the compounds are disclosed as being useful in inhibiting the activity of the receptor protein tyrosine kinase Axl. Methods of using the compounds in treating diseases

POLYCYCLIC HETEROARYL SUBSTITUTED TRIAZOLES USEFUL AS AXL INHIBITORS

-

Page/Page column 132-133, (2008/12/07)

Polycyclic heteroaryl substituted triazoles and pharmaceutical compositions containing the compounds are disclosed as being useful in inhibiting the activity of the receptor protein tyrosine kinase Axl. Methods of using the compounds in treating diseases

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