Butylamine → (E)-2-[(5R)-4,5,6,7-Tetrahydro-5-[(triethylsilyl)oxy]-5-[(3Z)-6-trimethylsilyl-3-hexen-1,5-diynyl]spiro[2,1-benzisoxazole-7,2'-[1,3]dioxolan]-4-ylidene]acetic acid, methyl ester

HRID 258161ノート

反応式

HRID 258161 の反応式
Cl/[CH:2]=[CH:3]\[C:4]#[C:5][Si:6]([CH3:9])([CH3:8])[CH3:7].C(N)CCC.[C:15]([C@:17]1([O:35][Si:36]([CH2:41][CH3:42])([CH2:39][CH3:40])[CH2:37][CH3:38])[CH2:18][C:19]2([C:24]3[C:25](/[C:29]/1=[CH:30]\[C:31]([O:33][CH3:34])=[O:32])=[CH:26][O:27][N:28]=3)[O:23][CH2:22][CH2:21][O:20]2)#[CH:16]>C1C=CC=CC=1.[Cl-].[Na+].O.[Cu]I>[CH2:41]([Si:36]([CH2:37][CH3:38])([CH2:39][CH3:40])[O:35][C@@:17]1([C:15]#[C:16]/[CH:2]=[CH:3]\[C:4]#[C:5][Si:6]([CH3:9])([CH3:8])[CH3:7])[CH2:18][C:19]2([C:24]3[C:25](/[C:29]/1=[CH:30]\[C:31]([O:33][CH3:34])=[O:32])=[CH:26][O:27][N:28]=3)[O:23][CH2:22][CH2:21][O:20]2)[CH3:42]

参加物

7

反応物 3

HCID 8007ButylamineHCID 10920792(Z)-(4-chloro-3-buten-1-ynyl)trimethylsilaneHCID 15736872(E)-2-[(5R)-5-Ethynyl-4,5,6,7-tetrahydro-5-[(triethylsilyl)oxy] spiro[2,1-benzisoxazole-7,2'-[1,3]dioxolan]-4-ylidene]acetic acid, methyl ester

生成物 1

HCID 15736873(E)-2-[(5R)-4,5,6,7-Tetrahydro-5-[(triethylsilyl)oxy]-5-[(3Z)-6-trimethylsilyl-3-hexen-1,5-diynyl]spiro[2,1-benzisoxazole-7,2'-[1,3]dioxolan]-4-ylidene]acetic acid, methyl ester収率 91%

試薬・触媒・溶媒 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 241Benzene溶媒2 回HCID 57417360Sodium chloride; water溶媒

反応条件

温度
25 °C

実験手順

(Z)-(4-chloro-3-buten-1-ynyl)trimethylsilane (1.41 mL, 8.16 mmol) and n-butylamine (0.81 mL, 8.16 mmol) were added to a solution of Pd(Ph3)4 (628 mg, 0.54 mmol) in benzene (25 mL). The solution was stirred at 25° C. for 15 minutes and then added to a mixture of Compound 61 (2.204 g, 5.44 mmol) and CuI (207 mg, 1.09 mmol) in benzene (25 mL) at zero degrees C. The solution was stirred two hours at zero degrees C, poured into brine (100 mL) and extracted with dichloromethane (3×100 mL). The organic extracts were dried (Na2SO4), concentrated and purified by flash chromatography (10 percent Et2O in petroleum ether) to give Compound 62 (2.606 g, 91 percent) as a colorless oil; Rf =0.46 (30% Et20 in petroleum ether); [a]D25 =+17.4° (c .2.7 , CH2Cl2); IR (thin film) νmax 1720 cm-1 ; 1H NMR (500 MHz, CDCl3) δ 9.50 (s, 1 H, C=CH--O), 6.65 (s, 1 H, C=CH--CO2), 5.86 (ABq, J =11.0 Hz, Dn =30 Hz, 2 H, CH=CH), 4.38-4.29 (m, 2 H, ethylene ketal), 4.15-4.09 (m, 2 H, ethylene ketal), 3.74 (s, 3 H, CO2Me), 2.67 (ABq, J =14.1 Hz, Dn =61 Hz, 2 H, CH2), 0.89 (t, J =7.3 Hz, 9 H, Si(CH2CH3)3), 0.66 (m, 6 H, Si(CH2CH3)3), 0.17 (s, 9 H, SiMe3); 13C NMR (125 MHz, CDCl3) δ 166.6, 161.2, 161.0, 143.7, 121.2, 118.6, 114.9, 112.0, 103.5, 101.3, 100.7, 95.5, 85.7, 72.1, 65.0, 64.6, 51.5, 50.0, 6.8, 5.9, -0.4; FAB HRMS (NBA/CsI) m/e 660.1213, M+Cs+ calcd for C27H37NO6Si2 660.1214.

後処理

  1. stirringThe solution was stirred two hours at zero degrees C
  2. extractionextracted with dichloromethane (3×100 mL)
  3. dry with materialThe organic extracts were dried (Na2SO4)
  4. concentrationconcentrated
  5. custompurified by flash chromatography (10 percent Et2O in petroleum ether)

出典と根拠

ORDレコード
ord-2714939bb0f24a4489578f02be6655fa
出典データセット
uspto-grants-1993_11
特許番号
US05264586

反応ノート

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