5,5'-Bi-2-benzofuran-1,1',3,3'-tetrone → Bpda tfmb

HRID 265912Notes

Reaction equation

HRID 265912 reaction equation
[CH:1]1[C:6]([C:7]2[CH:12]=[CH:11][C:10]3[C:13]([O:15][C:16](=[O:17])[C:9]=3[CH:8]=2)=[O:14])=[CH:5][C:4]2[C:18]([O:20][C:21](=[O:22])[C:3]=2[CH:2]=1)=[O:19].[CH:23]1[C:28]([NH2:29])=[CH:27][C:26]([C:30]([F:33])([F:32])[F:31])=[C:25]([C:34]2[CH:39]=[CH:38][C:37]([NH2:40])=[CH:36][C:35]=2[C:41]([F:44])([F:43])[F:42])[CH:24]=1>CN1C(=O)CCC1>[CH:1]1[C:6]([C:7]2[CH:12]=[CH:11][C:10]3[C:13]([O:15][C:16](=[O:17])[C:9]=3[CH:8]=2)=[O:14])=[CH:5][C:4]2[C:18]([O:20][C:21](=[O:22])[C:3]=2[CH:2]=1)=[O:19].[CH:38]1[C:37]([NH2:40])=[CH:36][C:35]([C:41]([F:44])([F:42])[F:43])=[C:34]([C:25]2[CH:24]=[CH:23][C:28]([NH2:29])=[CH:27][C:26]=2[C:30]([F:31])([F:32])[F:33])[CH:39]=1

Participants

4

Reactant 2

HCID 754945,5'-Bi-2-benzofuran-1,1',3,3'-tetroneHCID 629349(1,1'-Biphenyl)-4,4'-diamine, 2,2'-bis(trifluoromethyl)-

Product 1

HCID 131720099Bpda tfmb

Reagents, catalysts & solvents 1

HCID 13387N-methyl-2-pyrrolidoneSolvent

Procedure

A solution of polyamic acid was prepared at room temperature by combining 6.893 grams of 6FDA, 1.518 grams of BPDA, 6.608 grams of TFMB and 61.1 grams of NMP with good mixing. The amic acid solution was diluted to 10.9% solids, then cast on a silicon wafer by spin coating, and imidized by a heat treatment up to a maximum temperature of 300° C. to produce a coating having a thickness of 2.1 microns. The refractive index was determined in the same manner as in Example 1 and is reported in Table I.

Workup

  1. customA solution of polyamic acid was prepared at room temperature
  2. customimidized by a heat treatment up to a maximum temperature of 300° C.
  3. customto produce a coating

Sources & evidence

ORD record
ord-dbed9e972a19472fba1f3c23efa6faf6
Source dataset
uspto-grants-1997_07
Patent number
US05649045

Reaction notes

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