Tetraisocyanatosilane → HCID 21516094, compound

HRID 1284295Notes

Reaction equation

HRID 1284295 reaction equation
[CH3:1][NH:2][CH:3]1[C:16]2[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=2[O:10][C:9]2[C:4]1=[CH:5][CH:6]=[CH:7][CH:8]=2.[Si](N=C=O)(N=C=O)(N=C=O)[N:18]=[C:19]=[O:20]>C1C=CC=CC=1>[CH3:1][N:2]([CH:3]1[C:4]2[CH:5]=[CH:6][CH:7]=[CH:8][C:9]=2[O:10][C:11]2[C:16]1=[CH:15][CH:14]=[CH:13][CH:12]=2)[C:19]([NH2:18])=[O:20]

Participants

4

Reactant 2

HCID 76951TetraisocyanatosilaneHCID 202040099-Methylaminoxanthen

Product 1

HCID 21516094HCID 21516094, compound

Reagents, catalysts & solvents 1

HCID 241BenzeneSolvent2×

Procedure

A solution of 9-methylaminoxanthen (5 g.) in dry benzene (10 ml.) was added slowly to a stirred solution of silicon tetraisocyanate (1.16 g.) in benzene (10 ml.). The resulting solution was refluxed for 45 minutes and then evaporated to dryness in vacuo. The residue was refluxed for 30 minutes with 90% isopropanol (20ml.), filtered and the filtrate evaporated to dryness. The residue was washed with cold acetone and recrystallised from ethanol to give N-methyl-N-9-xanthenylurea, m.p. 199°-202°C.

Workup

  1. temperatureThe resulting solution was refluxed for 45 minutes
  2. customevaporated to dryness in vacuo
  3. temperatureThe residue was refluxed for 30 minutes with 90% isopropanol (20ml.)
  4. filtrationfiltered
  5. customthe filtrate evaporated to dryness
  6. washThe residue was washed with cold acetone
  7. customrecrystallised from ethanol

Sources & evidence

ORD record
ord-2015b0dbb9bf4bd7a2c6b832c53f45e3
Source dataset
uspto-grants-1976_08
Patent number
US03978226

Reaction notes

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