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CAS

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81770-71-0

7-Bromo-6-methyl-1,4-dioxa-spiro[4.4]non-6-ene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 81770-71-0 Structure

  • Basic information

    1. Product Name: 7-Bromo-6-methyl-1,4-dioxa-spiro[4.4]non-6-ene
    2. Synonyms:
    3. CAS NO:81770-71-0
    4. Molecular Formula:
    5. Molecular Weight: 219.078
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 81770-71-0.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: N/A
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: 7-Bromo-6-methyl-1,4-dioxa-spiro[4.4]non-6-ene(CAS DataBase Reference)
    10. NIST Chemistry Reference: 7-Bromo-6-methyl-1,4-dioxa-spiro[4.4]non-6-ene(81770-71-0)
    11. EPA Substance Registry System: 7-Bromo-6-methyl-1,4-dioxa-spiro[4.4]non-6-ene(81770-71-0)

  • 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: 81770-71-0(Hazardous Substances Data)

81770-71-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81770-71-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,7 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81770-71:
(7*8)+(6*1)+(5*7)+(4*7)+(3*0)+(2*7)+(1*1)=140
140 % 10 = 0
So 81770-71-0 is a valid CAS Registry Number.

81770-71-0Relevant articles and documents

Use of Protected β-Bromocyclopentenones and β-Bromocyclohexenones as β-Acylvinyl Anion Equivalents

Shih, Chuan,Swenton, John S.

, p. 2825 - 2832 (1982)

Ethylene glycol ketals of the 3-bromocyclohex-2-en-1-one as well as its 2-methyl, 2-n-propyl, and 5,5-dimethyl derivatives have been prepared, and their reactions with butyllithium were studied.The organolithium reagents derived from the above compounds react with a variety of electrophiles to afford after acid hydrolysis the corresponding 3-substituted cyclohexenones.Attempts to prepare the ethylene glycol ketal of 2-methyl-3-bromocyclopent-2-en-1-one gave a low yield of the bromoketal.However, dithioketals of 3-bromocyclopent-2-en-1-one and its 2-methyl derivativecould be prepared in good yield.The metalation chemistry of the dithioketals in both the five- and six-membered-ring series was examined.The functionalization chemistry of the resulting organolithium compounds afforded after dithioketal hydrolysis 3-functionalized cyclohex-2-en-1-ones and cyclopent-2-en-1-ones.Several limitations of the chemistry using allyl bromide and cyclohexenone as electrophiles are noted.

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