Benzyl carbazate → N'-(1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carbonyl)-hydrazinecarboxylic acid benzyl ester

HRID 1924820ノート

反応式

HRID 1924820 の反応式
[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.[CH2:16]([O:23][C:24]([NH:26][NH2:27])=[O:25])[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F>C(Cl)Cl.CCOCC>[CH2:16]([O:23][C:24]([NH:26][NH:27][C:12]([C:7]1[S:8][C:9]([CH3:11])=[C:10]2[C:6]=1[CH2:5][CH:4]1[C:2]([CH3:1])([CH3:15])[CH:3]12)=[O:14])=[O:25])[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1

参加物

7

反応物 4

HCID 79242Benzyl carbazateHCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 57892448(1aS,5aR)-1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carboxylic acid

生成物 1

HCID 67520612N'-(1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carbonyl)-hydrazinecarboxylic acid benzyl ester

試薬・触媒・溶媒 2

HCID 3283Diethyl Ether溶媒HCID 6344Dichloromethane溶媒

実験手順

To a solution of (1aS,5aR)-1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carboxylic acid (2.2 g, 9.9 mmol), hydrazinecarboxylic acid benzyl ester (3.38 g, 20.4 mmol) and DIPEA (2 mL) in DCM (50 mL) is added TBTU (3.2 g, 10 mmol). The mixture is stirred at rt for 20 h. The mixture is diluted with Et2O (200 mL) and extracted with 1 M aq. NaOH (3×50 mL) and 1 M aq. HCl (2×50 mL). The organic phase is dried (Na2SO4), filtered and evaporated to give crude N′-(1,1,2-trimethyl-1,1a,5,5a-tetrahydro-3-thia-cyclopropa[a]pentalene-4-carbonyl)-hydrazinecarboxylic acid benzyl ester; LC-MS: tR=1.01 min, [M+1]+=371.25.

後処理

  1. extractionextracted with 1 M aq. NaOH (3×50 mL) and 1 M aq. HCl (2×50 mL)
  2. dry with materialThe organic phase is dried (Na2SO4)
  3. filtrationfiltered
  4. customevaporated

出典と根拠

ORDレコード
ord-69ca278e8e744d1fac265a616c687c9e
出典データセット
uspto-grants-2012_05
特許番号
US08178562B2

反応ノート

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