Diisopropylethylamine → (1aS,5aR)-1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carboxylic acid 4-hydroxy-3,5-dimethyl-benzylamide

HRID 2353595Notes

Reaction equation

HRID 2353595 reaction equation
[CH3:1][C:2]1([CH3:15])[C@@H:4]2[CH2:5][C:6]3[C:10]([C@H:3]12)=[C:9]([CH3:11])[S:8][C:7]=3[C:12]([OH:14])=O.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.C(N(C(C)C)C(C)C)C.[NH2:47][CH2:48][C:49]1[CH:54]=[C:53]([CH3:55])[C:52]([OH:56])=[C:51]([CH3:57])[CH:50]=1>CN(C=O)C.C(O)=O>[OH:56][C:52]1[C:51]([CH3:57])=[CH:50][C:49]([CH2:48][NH:47][C:12]([C:7]2[S:8][C:9]([CH3:11])=[C:10]3[C:6]=2[CH2:5][C@H:4]2[C:2]([CH3:1])([CH3:15])[C@H:3]23)=[O:14])=[CH:54][C:53]=1[CH3:55]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 136687374-(Aminomethyl)-2,6-dimethylphenolHCID 57892448(1aS,5aR)-1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carboxylic acid

Product 1

HCID 68452739(1aS,5aR)-1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carboxylic acid 4-hydroxy-3,5-dimethyl-benzylamideYield 93.8%

Reagents, catalysts & solvents 2

HCID 284Formic AcidSolventHCID 6228DimethylformamideSolvent2×

Procedure

A solution of (1aS,5aR)-1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carboxylic acid (67 mg, 0.30 mmol), TBTU (106 mg, 0.33 mmol) and ethyl-diisopropylamine (169 μL, 0.99 mmol) in DMF (2 mL) is allowed to stand at rt for 10 min. A solution of 4-aminomethyl-2,6-dimethyl-phenol (45 mg, 0.30 mmol) in DMF (0.5 mL) is added and the mixture is allowed to stand at rt for 3 h. After the addition of formic acid (0.2 mL) the mixture is separated by HPLC to afford (1aS,5aR)-1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carboxylic acid 4-hydroxy-3,5-dimethyl-benzylamide (100 mg) as a colourless oil. LC-MS: tR=1.03 min, [M+1]+=356.23.

Workup

  1. waitto stand at rt for 3 h
  2. customis separated by HPLC

Sources & evidence

ORD record
ord-189e5ed8208b4b048907accb07d813b9
Source dataset
uspto-grants-2010_07
Patent number
US07750040B2

Reaction notes

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