Benzaldehyde → HCID 89649860, compound

HRID 531193Notes

Reaction equation

HRID 531193 reaction equation
[CH:1](=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:9](#[N:13])[CH2:10][C:11]#[N:12].C(N(CC)CC)C.[CH3:21][O:22][C:23]1[CH:28]=[CH:27][C:26]([C:29]2[CH2:33][C:32](=[O:34])[N:31]([C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)[N:30]=2)=[CH:25][CH:24]=1>C(O)C>[NH2:12][C:11]1[O:34][C:32]2[N:31]([C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)[N:30]=[C:29]([C:26]3[CH:25]=[CH:24][C:23]([O:22][CH3:21])=[CH:28][CH:27]=3)[C:33]=2[CH:1]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[C:10]=1[C:9]#[N:13]

Participants

6

Reactant 4

HCID 240BenzaldehydeHCID 8010MalononitrileHCID 8471TriethylamineHCID 103081595-(4-Methoxyphenyl)-2-phenyl-2,4-dihydro-3H-pyrazol-3-one

Product 1

HCID 89649860HCID 89649860, compoundYield 58%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of benzaldehyde (290 μL, 2.87 mmol, 1.0 equ.), malononitrile (190 mg, 2.87 mmol, 1.0 equ.) and triethylamine (400 μL, 2.87 mmol, 1.0 equ.) in ethanol (10 mL) was stirred for 1 min, followed by the addition of 3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-5(4H)-one (764 mg, 2.87 mmol, 1 equ.). The reaction mixture was concentrated after 19 h and washed with ethanol and hexanes, re-crystallized from ethanol, and washed with hexanes and ethanol to give 6-amino-3-(4-methoxyphenyl)-1,4-diphenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (695 mg, 1.65 mmol, 58%) as a white solid. 1H-NMR (400 MHz) DMSO: 7.94-7.92 (d, 2H), 7.58-7.53 (m, 2H), 7.41-7.37 (t, 1H), 7.27-7.16 (m, 7H), 6.83-6.81 (d, 2H), 5.04 (s, 1H), 3.71 (s, 3H), 13C-NMR (100 MHz) DMSO: 159.5, 159.0, 146.6, 145.6, 144.5, 137.9, 129.8, 128.9, 128.3, 128.0, 127.3, 127.1, 125.1, 121.1, 120.3, 114.1, 97.5, 59.8, 55.5, 37.9; LC/MS-MS: 421.2→355.0 m/z; GS1 and GS2 at 30, DP=71, CE=33, CXP=24, tR=4.28 min.

Workup

  1. concentrationThe reaction mixture was concentrated after 19 h
  2. washwashed with ethanol and hexanes
  3. customre-crystallized from ethanol
  4. washwashed with hexanes and ethanol

Sources & evidence

ORD record
ord-1ca565cfb68b4fd08243243a0ad2b3f7
Source dataset
uspto-grants-2016_05
Patent number
US09353121B2

Reaction notes

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