2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane → 3-Cyclopropyl-2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one

HRID 2097437Notes

Reaction equation

HRID 2097437 reaction equation
Br[C:2]1[N:19]([CH2:20][O:21][CH2:22][CH2:23][Si:24]([CH3:27])([CH3:26])[CH3:25])[C:5]2[CH:6]=[N:7][N:8]([CH2:11][O:12][CH2:13][CH2:14][Si:15]([CH3:18])([CH3:17])[CH3:16])[C:9](=[O:10])[C:4]=2[C:3]=1[CH:28]1[CH2:30][CH2:29]1.BrC1N(COCC[Si](C)(C)C)C2C=NN(COCC[Si](C)(C)C)C(=O)C=2C=1C.[F:59][CH:60]([F:83])[O:61][C:62]1[CH:63]=[CH:64][C:65](B2OC(C)(C)C(C)(C)O2)=[C:66]2[C:71]=1[O:70][C:69]([CH3:73])([CH3:72])[CH:68]=[CH:67]2.C1(OC2C=C(B3OC(C)(C)C(C)(C)O3)C=CC=2OC(F)F)CC1>>[CH:28]1([C:3]2[C:4]3[C:9](=[O:10])[N:8]([CH2:11][O:12][CH2:13][CH2:14][Si:15]([CH3:16])([CH3:17])[CH3:18])[N:7]=[CH:6][C:5]=3[N:19]([CH2:20][O:21][CH2:22][CH2:23][Si:24]([CH3:27])([CH3:26])[CH3:25])[C:2]=2[C:65]2[CH:64]=[CH:63][C:62]([O:61][CH:60]([F:59])[F:83])=[C:71]3[C:66]=2[CH:67]=[CH:68][C:69]([CH3:72])([CH3:73])[O:70]3)[CH2:30][CH2:29]1

Participants

5

Reactant 4

HCID 666026762-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolaneHCID 666027042-Bromo-3-methyl-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-oneHCID 666028342-(3-Cyclopropoxy-4-difluoromethoxyphenyl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolaneHCID 666031452-Bromo-3-cyclopropyl-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one

Product 1

HCID 666030283-Cyclopropyl-2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-oneYield 102.3%

Procedure

Reaction and post treatment were carried out in the same manner as in Example 4-(a) except for using 1.03 g (2.0 mmol) of 2-bromo-3-cyclopropyl-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one obtained in the following Reference example 28-(b) in place of 2-bromo-3-methyl-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, and using 1.40 g (3.97 mmol) of 2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane obtained in the following Reference example 1-(i) in place of 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane, whereby 1.35 g of the title compound was obtained as a yellowish oil substantially quantitatively.

Workup

  1. customReaction and post treatment

Sources & evidence

ORD record
ord-904d21dc19fd4f0088a4c3ccfe5e1a6a
Source dataset
uspto-grants-2013_05
Patent number
US08450319B2

Reaction notes

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