A kind of synthetic method of 3,4 thioxenes [2,3 b] bithiophene

A kind of synthetic method of 3,4 thioxenes [2,3 b] bithiophene

  • CN 106,977,526 A
  • Filed: 05/25/2017
  • Published: 07/25/2017
  • Est. Priority Date: 05/25/2017
  • Status: Active Application
First Claim
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1. one kind 3, the synthetic method of 4- thioxenes [2,3-b] bithiophene, it is characterised in that comprise the following steps:

  • 1)

    Carbon disulfide, malonate and DMF are mixed, backflow is warming up to;

    2)

    Add catalyst and 40~50 wt % acetaldehyde solutions into above-mentioned mixed system, and be passed through protection gas, then by system150~180 DEG C are warming up to, pressure adds to 4~7 atmospheric pressure, react 10~12h;

    The catalyst is the palladium of carrying potassium oxideCarbon;

    3)

    Separating-purifying obtains product 3,4- thioxenes [2,3-b] bithiophene.

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