Toluene → 4-[(5S,9R)-7-Benzyl-3-(3,5-dichlorophenyl)-1-methyl-2,4-dioxo-1,3,7-triazaspiro[4.4]non-9-yl]-benzonitrile

HRID 456720

Reaction equation

[Cl:1][C:2]1[CH:3]=[C:4]([N:9]2[C:13](=[O:14])/[C:12](=[CH:15]\[C:16]3[CH:23]=[CH:22][C:19]([C:20]#[N:21])=[CH:18][CH:17]=3)/[N:11]([CH3:24])[C:10]2=[O:25])[CH:5]=[C:6]([Cl:8])[CH:7]=1.[CH2:26]1N2CN3CN(C2)[CH2:28][N:27]1[CH2:34]3.C(NCC(O)=O)[C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1.C1(C)C=CC=CC=1>CN1CCCC1=O>[CH2:26]([N:27]1[CH2:34][C@@H:15]([C:16]2[CH:17]=[CH:18][C:19]([C:20]#[N:21])=[CH:22][CH:23]=2)[C@:12]2([N:11]([CH3:24])[C:10](=[O:25])[N:9]([C:4]3[CH:5]=[C:6]([Cl:8])[CH:7]=[C:2]([Cl:1])[CH:3]=3)[C:13]2=[O:14])[CH2:28]1)[C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1

Participants

Conditions

Temperature: 140 °C

Procedure

A mixture of (E)-4-((1-(3,5-dichlorophenyl)-3-methyl-2,5-dioxoimidazolidin-4-ylidene)methyl)benzonitrile (1.05 g, 2.82 mmol), hexamethylenetetramine (0.395 g, 2.82 mmol), N-benzylglycine (1.17 g, 7.05 mmol), toluene (5 ml), and 1-methyl-2-pyrrolidinone (NMP, 10 ml) was heated to 140° C. The extent of reaction was monitored by HPLC. After 72 hours, the reaction had stopped short of completion. The ratio of product to starting material ((E)-4-((1-(3,5-dichlorophenyl)-3-methyl-2,5-dioxoimidazolidin-4-ylidene)methyl)benzonitrile) was 1.36:1. Mass spectra of the mixture indicated the presence of the desired product. The mixture was washed with water and extracted into toluene. The impure product was obtained as an oil. Comparison of the product obtained to authentic material was made by HPLC. The ratio of the desired (5S, 9R) isomer to the undesired was 19:1.

Workup

customThe extent of reaction

Sources & evidence

ORD record: ord-2d6bc040ace94bfc83405eb1ce3346cd
Source dataset: uspto-grants-2007_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07186727B2

Linked notes

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