1-Butanol → HCID 178450655, compound

HRID 1614405Notes

Reaction equation

HRID 1614405 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[C:9]([CH3:14])([CH3:13])[CH2:8][CH2:7][C:6]2([CH3:16])[CH3:15])#[CH:2].[CH:17]([C:19]1[CH:28]=[CH:27][C:22]([C:23]([O:25][CH3:26])=[O:24])=[CH:21][CH:20]=1)=O.[NH2:29][C:30]([NH2:32])=[O:31].S(=O)(=O)(O)O.[CH2:38](O)[CH2:39][CH2:40]C>CCOCC.O>[C:23]([C:22]1[CH:27]=[CH:28][C:19]([C:17]2[CH:2]=[C:1]([C:3]3[CH:12]=[CH:11][C:10]4[C:9]([CH3:14])([CH3:13])[CH2:8][CH2:7][C:6]([CH3:16])([CH3:15])[C:5]=4[CH:4]=3)[N:32]=[C:30]([OH:31])[N:29]=2)=[CH:20][CH:21]=1)([O:25][CH2:26][CH2:38][CH2:39][CH3:40])=[O:24]

Participants

8

Reactant 5

HCID 2631-ButanolHCID 1118Sulfuric AcidHCID 1176UreaHCID 15294Methyl 4-FormylbenzoateHCID 147265491,1,4,4-Tetramethyl-6-ethynyl-1,2,3,4-tetrahydronaphthalene

Product 1

HCID 178450655HCID 178450655, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 3283Diethyl EtherSolvent

Procedure

21 g (0.1 mole) of 6-ethynyl-1,2,3,4-tetrahydro-1,1,4,4-tetramethylnaphthalene, 16 g (0.1 mole) of methyl 4-formylbenzoate, 9 g (0.15 mole) of urea and 15 ml of concentrated sulfuric acid in 50 ml of n-butanol were refluxed for 4 hours. After cooling, the mixture was poured onto 500 ml of water, 100 ml of ether were added and stirring was carried out for 5 minutes. A solid was precipitated between phases. In a shaking funnel, the washed with water and then shaken thoroughly with 200 ml of petroleum ether. The precipitate was filtered off under suction and washed with petroleum ether. 6.5 g of the title compound of melting point 267°-277° C. were obtained in this manner.

Workup

  1. temperatureAfter cooling
  2. additionwere added
  3. customA solid was precipitated between phases
  4. washIn a shaking funnel, the washed with water
  5. stirringshaken thoroughly with 200 ml of petroleum ether
  6. filtrationThe precipitate was filtered off under suction
  7. washwashed with petroleum ether

Sources & evidence

ORD record
ord-e78864ecd2a941718326c47503d2a814
Source dataset
uspto-grants-1993_03
Patent number
US05196532

Reaction notes

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