199982-02-0 Usage
General Description
4-Butyl-4'-iodobiphenyl is a chemical compound with the molecular formula C18H19I. It is a biphenyl derivative with a butyl group attached to each of the benzene rings, and an iodine atom attached to one of the benzene rings. 4-Butyl-4'-iodobiphenyl is primarily used in organic synthesis and materials science. It is a versatile building block for the synthesis of various organic compounds and is also used in the production of liquid crystals, polymers, and other materials with specific optical and electronic properties. 4-Butyl-4'-iodobiphenyl is considered to be a hazardous chemical and should be handled with care due to its potential for causing skin and eye irritation, and its harmful effects if ingested or inhaled.
Check Digit Verification of cas no
The CAS Registry Mumber 199982-02-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,9,8 and 2 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 199982-02:
(8*1)+(7*9)+(6*9)+(5*9)+(4*8)+(3*2)+(2*0)+(1*2)=210
210 % 10 = 0
So 199982-02-0 is a valid CAS Registry Number.
199982-02-0Relevant articles and documents
Synthesis method of 4-alkyl biphenylacetylene
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Paragraph 0051; 0053, (2021/06/13)
The invention discloses a synthesis method of 4-alkyl biphenyl acetylene. The synthesis method comprises the following steps: carrying out catalytic hydrogenation reaction on 4-alkyl diketone to obtain 4-alkyl biphenyl; then reacting the 4-alkyl biphenyl with halogen to obtain 4-halogen-4 '-alkyl biphenyl; and allowing 4-halo-4 '-alkyl biphenyl and an ethynylation reagent to be subjected to a coupling reaction to obtain a compound shown in a formula (IV) under the action of alkali. The method creatively adopts a palladium catalyst and lewis acid combined catalytic system to carry out deoxidation reaction on 4-alkyl diketone, and has good selectivity and high yield; in addition, hydrogen is used as a hydrogen source, a byproduct is only water, and the method is environment-friendly.
