HomeMCPWorkbenchSkills
HomeWorkbenchNotificationsMe
llms.txt · MCP GuidePrivacy Policy · Terms of Service · Supportv1.8.0
  1. Home
  2. /Reaction

Hydrochloric Acid → N-[(2-Adamantyloxy)carbonyl]-alpha-trimethylsilylethoxymethyl-DL-tryptophan

HRID 54862
Notes
Print preview

Reaction equation

HRID 54862 reaction equation
C[O:2][C:3](=[O:37])[CH:4]([CH2:27][C:28]1[C:36]2[C:31](=[CH:32][CH:33]=[CH:34][CH:35]=2)[NH:30][CH:29]=1)[N:5]([CH2:19][O:20][CH:21]([Si:23]([CH3:26])([CH3:25])[CH3:24])[CH3:22])[C:6]([O:8][CH:9]1[CH:16]2[CH2:17][CH:12]3[CH2:13][CH:14]([CH2:18][CH:10]1[CH2:11]3)[CH2:15]2)=[O:7].[Li+].[OH-].O1CCOCC1.Cl>O>[CH:10]12[CH2:11][CH:12]3[CH2:13][CH:14]([CH2:15][CH:16]([CH2:17]3)[CH:9]1[O:8][C:6]([N:5]([CH2:19][O:20][CH:21]([Si:23]([CH3:25])([CH3:24])[CH3:26])[CH3:22])[CH:4]([C:3]([OH:37])=[O:2])[CH2:27][C:28]1[C:36]3[C:31](=[CH:32][CH:33]=[CH:34][CH:35]=3)[NH:30][CH:29]=1)=[O:7])[CH2:18]2
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 312751,4-DioxaneHCID 86747503N-[(2-Adamantyloxy)carbonyl]-alpha-trimethylsilylethoxymethyl-DL-tryptophan methyl ester

Product 1

HCID 86747505N-[(2-Adamantyloxy)carbonyl]-alpha-trimethylsilylethoxymethyl-DL-tryptophanYield 91.8%

Reagents, catalysts & solvents

1
HCID 962WaterSolvent

Conditions

Temperature
60 °C

Procedure

A mixture of N-[(2-adamantyloxy)carbonyl]-α-trimethylsilylethoxymethyl-DL-tryptophan methyl ester (4.5 g, 8.5 mmol), LiOH (0.22 g, 9.1 mmol), dioxane (90 mL), and water (30 mL) was stirred at 60° C. for 16 hours. After cooling, the reaction mixture was acidified to pH 4 with 1N hydrochloric acid and extracted with ethyl acetate. The organic extract was dried over Na2SO4 and then concentrated in vacuo. Trituration of the oily residue with diethyl ether gave the title compound as a white solid (4.0 g, 91.7%), mp 203° C. (dec.).

Workup

  1. temperatureAfter cooling
  2. extractionextracted with ethyl acetate
  3. extractionThe organic extract
  4. dry with materialwas dried over Na2SO4
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-8f462b831ee44228862923ab80b54353
Source dataset
uspto-grants-1997_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05622983

Reaction notes

Loading…

On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes