Diethyl (ethoxymethylene)malonate → HCID 86733250, compound

HRID 1605963Notes

Reaction equation

HRID 1605963 reaction equation
[NH2:1][C:2]1[S:3][C:4]([CH3:12])=[CH:5][C:6]=1[C:7]([O:9][CH2:10][CH3:11])=[O:8].C(O[CH:16]=[C:17]([C:23]([O:25][CH2:26][CH3:27])=[O:24])[C:18]([O:20][CH2:21][CH3:22])=[O:19])C>C(O)C>[CH2:10]([O:9][C:7]([C:6]1[CH:5]=[C:4]([CH3:12])[S:3][C:2]=1[NH:1][CH:16]=[C:17]([C:18]([O:20][CH2:21][CH3:22])=[O:19])[C:23]([O:25][CH2:26][CH3:27])=[O:24])=[O:8])[CH3:11]

Participants

4

Reactant 2

HCID 6871Diethyl (ethoxymethylene)malonateHCID 4062885Ethyl 2-Amino-5-methylthiophene-3-carboxylate

Product 1

HCID 86733250HCID 86733250, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
110 °C

Procedure

A mixture of 3.7 parts of ethyl 2-amino-5-methylthiophene-3-carboxylate and 4.4 parts of diethyl ethoxymethylenemalonate is heated at 110°C for 1.5 hour. After cooling ethanol is added and the crystals are collected by filtration, whereby diethyl (3-ethoxycarbonyl-5-methylthienyl)aminomethylenemalonate is obtained as crystals. Recrystallization from ethanol gives pale yellow needles melting at 67°-68°C.

Workup

  1. additionis added
  2. filtrationthe crystals are collected by filtration

Sources & evidence

ORD record
ord-6350bbc247374657b909d597ed6281f3
Source dataset
uspto-grants-1976_04
Patent number
US03951989

Reaction notes

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