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

Benzyl Alcohol → tert-Butyl 4-(((benzyloxy)carbonyl)amino)-4-methylpiperidine-1-carboxylate

HRID 1642672
Notes
Print preview

Reaction equation

HRID 1642672 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C:11]([CH3:17])(C(O)=O)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C([N:20]([CH2:23]C)CC)C.C1(P(N=[N+]=[N-])(C2C=CC=CC=2)=[O:32])C=CC=CC=1.[CH2:42]([OH:49])[C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1>C1(C)C=CC=CC=1>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][C:11]([NH:20][C:23]([O:49][CH2:42][C:43]2[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=2)=[O:32])([CH3:17])[CH2:12][CH2:13]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 244Benzyl AlcoholHCID 8471TriethylamineHCID 199401P,P-Diphenylphosphinic azideHCID 232828481-[(Tert-butoxy)carbonyl]-4-methylpiperidine-4-carboxylic acid

Product 1

HCID 29920214tert-Butyl 4-(((benzyloxy)carbonyl)amino)-4-methylpiperidine-1-carboxylateYield 78%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of the 4-methyl-piperidine-1,4-dicarboxylic acid mono-tert-butyl ester (5 g, 20.6 mmol) in toluene (40 mL) at 23° C. was added triethylamine (4.3 mL, 31 mmol) and diphenylphosphoryl azide (6.1 mL, 28.0 mmol). The resulting mixture was stirred at 23° C. for 45 minutes after which benzyl alcohol (11.1 mL, 103 mmol) was added. The reaction mixture was then heated to 80° C. for 16 hours. The reaction mixture was allowed to cool to room temperature and the excess solvents were removed under reduced pressure. The crude residue was purified by chromatography (silica gel, eluting with 10% ethyl acetate/90% hexane to 30% ethyl acetate/70% hexane) to provide the titled compound (5.6 grams). MS (CI) m/z 249 (M−99)+; 1H NMR (300 MHz, CDCl3) δ ppm 7.38-7.31 (m, 5H), 5.05 (s, 2H), 4.57 (s, 1H), 3.67-3.60 (m, 2H), 3.18 (m, 2H), 1.98-1.90 (m, 2H), 1.44 (s, 9H), 1.37 (s, 3H).

Workup

  1. additionwas added
  2. temperatureto cool to room temperature
  3. customthe excess solvents were removed under reduced pressure
  4. customThe crude residue was purified by chromatography (silica gel, eluting with 10% ethyl acetate/90% hexane to 30% ethyl acetate/70% hexane)

Sources & evidence

ORD record
ord-10179ea3ac334a9bbb598cbd7149fec8
Source dataset
uspto-grants-2012_02
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08119664B2

Reaction notes

Loading…

On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes