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139449-29-9

4H-1-Benzopyran-4-one, 2,3-dihydro-3-methyl-3-(phenylsulfonyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 139449-29-9 Structure

  • Basic information

    1. Product Name: 4H-1-Benzopyran-4-one, 2,3-dihydro-3-methyl-3-(phenylsulfonyl)-
    2. Synonyms:
    3. CAS NO:139449-29-9
    4. Molecular Formula: C16H14O4S
    5. Molecular Weight: 302.351
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 139449-29-9.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: 4H-1-Benzopyran-4-one, 2,3-dihydro-3-methyl-3-(phenylsulfonyl)-(CAS DataBase Reference)
    10. NIST Chemistry Reference: 4H-1-Benzopyran-4-one, 2,3-dihydro-3-methyl-3-(phenylsulfonyl)-(139449-29-9)
    11. EPA Substance Registry System: 4H-1-Benzopyran-4-one, 2,3-dihydro-3-methyl-3-(phenylsulfonyl)-(139449-29-9)

  • 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: 139449-29-9(Hazardous Substances Data)

139449-29-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139449-29-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,4 and 9 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139449-29:
(8*1)+(7*3)+(6*9)+(5*4)+(4*4)+(3*9)+(2*2)+(1*9)=159
159 % 10 = 9
So 139449-29-9 is a valid CAS Registry Number.

139449-29-9Relevant articles and documents

Metal-free desulfonylation reaction through visible-light photoredox catalysis

Yang, Deng-Tao,Meng, Qing-Yuan,Zhong, Jian-Ji,Xiang, Ming,Liu, Qiang,Wu, Li-Zhu

, p. 7528 - 7532 (2013)

The desulfonylation of β-arylketosulfones has been achieved in good to excellent yields by using 3-W blue LEDs light, 1 mol-% organic dye eosin Y bis(tetrabutylammonium salt) as photocatalyst, and diisopropylethylamine as reducing agent. Mechanistic studies demonstrate that oxidative quenching of the excited eosin Y by β-arylketosulfones plays a crucial role in the present photoredox catalytic cycle. Reductive desulfonylation is essential to enable to use of a sulfone as an auxiliary group. For reductive removal of sulfones, highly aggressive metal-containing reducing agents and harsh reaction conditions are often employed. In this paper, metal-free desulfonylation of β-arylketosulfones can be achieved efficiently at room temperature under visible-light irradiation.

A Facile Synthesis of 3-Alkylchromanones and Chromones

Santhosh, K. C.,Balasubramanian, K. K.

, p. 7727 - 7730 (2007/10/02)

A simple and high yielding route to 3-alkylchromanones and 3-alkylchromones has been achieved from 3-alkyl-3-phenylsulphonyl-4-chromanones.

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