Benzaldehyde → HCID 69543942, compound

HRID 1278998Notes

Reaction equation

[CH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1[S:11]([N:14]1[CH2:18][C@H:17]([S:19][C:20]([C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[CH2:16][C@H:15]1[C:39]([NH:41][NH2:42])=[O:40])(=[O:13])=[O:12].[CH:43](=O)[C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1>C(O)C>[CH:43](=[N:42][NH:41][C:39]([C@@H:15]1[CH2:16][C@@H:17]([S:19][C:20]([C:27]2[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=2)([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[C:33]2[CH:34]=[CH:35][CH:36]=[CH:37][CH:38]=2)[CH2:18][N:14]1[S:11]([C:2]1[CH:3]=[CH:4][C:5]2[C:10](=[CH:9][CH:8]=[CH:7][CH:6]=2)[CH:1]=1)(=[O:13])=[O:12])=[O:40])[C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1

Participants

Conditions

Temperature: 80 °C

Procedure

(step 10) To a suspension of 3.0 g (5.05 mmol) (2S,4R)-1-(Naphthalene-2-sulfonyl)-4-tritylsulfanyl-pyrrolidine-2-carboxylic acid hydrazide in ethanol were added 0.56 ml (5.6 mmol, 1.1 eq) benzaldehyde at RT, and the reaction mixture was heated to 80° C. for 3 h. The solvent was evaporated and the residue was purified by flash chromatography on silica gel with ethyl acetate:hexane 1:1 as eluent yielding 2.75 g (80%) (2S,4R)-1-(Naphthalene-2-sulfonyl)-4-tritylsulfanyl-pyrrolidine-2-carboxylic acid benzylidene-hydrazide as white foam, MS: 682 (MH+).

Workup

customThe solvent was evaporated
customthe residue was purified by flash chromatography on silica gel with ethyl acetate:hexane 1:1 as eluent

Sources & evidence

ORD record: ord-4240a861b6434bf086cc80b86121f3c2
Source dataset: uspto-grants-2002_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06444829B1

Reaction notes

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