JP5458303B2 - 光学活性アリールアミノホスホニウム塩、不斉合成反応用触媒、及び光学活性化合物の製造方法 - Google Patents
光学活性アリールアミノホスホニウム塩、不斉合成反応用触媒、及び光学活性化合物の製造方法 Download PDFInfo
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また、本発明の光学活性アリールアミノホスホニウム塩(以下、「本発明の塩」ともいう。)は、下記式(1−2)又は(1−3)で表される。式(1−2)及び(1−3)中、R 1 及びR 8 は、それぞれ独立に、水素原子、炭素数1〜8のアルキル基又は炭素数4〜15のアリール基であり、該アリール基は、ハロゲン原子及びアルキル基から選ばれる置換基を1〜3個有していてもよい。R 2 、R 7 、R 9 、R 10 、R 15 及びR 16 は、それぞれ独立に、水素原子又は炭素数1〜8のアルキル基である。X − は対イオンである。
式(1)中、R1〜R16は、それぞれ独立に水素原子又は任意の置換基である。該任意の置換基の種類には特に限定はない。上記任意の置換基は、炭化水素基を有する置換基でもよく、炭化水素基を有しない置換基でもよい。
本発明の触媒は、本発明の塩を含む限り、その組成には特に限定はない。本発明の触媒は、本発明の塩のみからなる構成でもよく、他の成分を含んでいてもよい。
本発明の製造方法では、本発明の塩の存在下、 電子吸引性基により活性化された炭素−炭素不飽和結合(二重結合又は三重結合)への求核付加反応を行い、光学活性化合物を製造する。
光学活性アリールアミノホスホニウム塩の合成経路を以下に示す。
〔1〕1H−NMR(500MHz,CD3OD);δ8.021(2H,s),8.017(2H,d,J=8.5Hz),7.96(2H,d,J=8.5Hz),7.90(2H,d,J=8.5Hz),7.51−7.47(8H,m),7.40 (2H,d,J=8.5Hz),7.25(2H,t,J=8.5Hz),7.23(2H,t,J=8.5Hz),6.99(2H,d,J=8.5Hz),6.97(2H,d,J=8.5Hz),6.91−6.86(6H,m),N−H protons were not found due to deuteration.
〔2〕13C−NMR(126MHz,CD3OD);δ139.0,138.4(d,JP−C=3.7Hz),136.8(d,JP−C=6.3Hz),134.13(d,JP−C=1.4Hz),134.09(d,JP−C=1.4Hz),133.6(d,JP−C=1.4Hz),133.2(d,JP−C=1.4Hz),133.1(d,JP−C=5.9Hz),132.0,131.3,130.6(d,JP−C=1.9Hz),130.5,129.4,129.2,128.6,128.43,128.40,127.7,127.6,127.4,127.2 (d,JP−C=2.4Hz),126.7,124.2(d,JP−C=3.7Hz),one carbon was not found probably due to overlapping.
〔3〕31P−NMR(121MHz,CD3OD);δ46.9
〔1〕1H−NMR(500MHz,アセトン−d6);δ8.13(2H,d,J=8.5Hz),8.05(2H,s),8.04(2H,d,J=8.5Hz),7.97(2H,d,J=8.5Hz),7.80(8H,brs),7.68(4H,brs),7.60(2H,t,J=8.5Hz),7.56(2H,t,J=8.5Hz),7.44(4H,d,J=7.5Hz),7.35(2H,t,J=8.5Hz),7.32(2H,t,J=8.5Hz),7.30(2H,d,J=8.5Hz),7.05(2H,d,J=8.5Hz),7.00(2H,d,J=8.5Hz),6.89(4H,t,J=7.5Hz),6.84(2H,t,J=7.5Hz),N−H protons were not found due to broadening.
〔2〕13C−NMR(126MHz,アセトン−d6):δ162.6(q,JB−C=50.0Hz),138.4,138.0(d,JP−C=3.2Hz),136.1(d,JP−C=5.9Hz),135.6,133.7,133.0,132.79(d,JP−C=8.2Hz),132.76,131.8,131.2,130.11,130.09(d,JP−C=5.9Hz),130.03(q,JF−C=31.6Hz),129.4,129.3,129.0,128.4,128.2,128.1,127.7,127.6,127.4,126.6,125.4(q,JF−C=272.5Hz),124.4(d,JP−C=4.2Hz),118.5,two carbons were not found probably due to overlapping.
〔3〕19F−NMR(282MHz,アセトン−d6):δ−62.6
〔4〕31P−NMR(121MHz,アセトン−d6):δ45.4
〔5〕IR(KBr):3373,3065,1610,1500,1415,1356,1278,1128,993,887,752,712cm−1
〔6〕HRMS(ESI−TOF);Calcd for C52H36N4P+([M]+)747.2672,Found 747.2694
〔7〕[α]D 24;16.4°(c=0.21,CHCl3)
3,3’−ジフェニル−(R)−2,2’−ジアミノ−1,1’−ビナフチルジアミンに代えて、種々の3,3’−ジアリール置換ビナフチルジアミンを用い、上記合成(I)と同様の手順により、以下に示すアリールアミノホスホニウム塩(1a・Cl)、(1a・BArF)、(1b・Cl)、(1b・BArF)、(2c・Cl)、及び(2c・BArF)を得た。(1a・BArF)、(1b・BArF)、及び(2c・BArF)これらの1H−NMR及び13C−NMRのスペクトルを図2〜図4に示す。スペクトルデータは以下の通りである。
〔1〕1H−NMR(500MHz,CD3OD);δ8.18(4H,d,J=8.5Hz),8.03(4H,d,J=8.5Hz),7.57(4H,d,J=8.5Hz),7.48(4H,t,J=8.5Hz),7.24(4H,t,J=8.5Hz),7.07(4H,d,J=8.5Hz),N−H protons were not found due to deuteration.
〔2〕13C−NMR(126MHz,CD3OD):δ135.7(d,JP−C=5.0Hz),134.2(d,JP−C=1.4Hz),133.4(d,JP−C=1.4Hz),131.5,129.4,128.24,128.16(d,JP−C=2.3Hz),127.7,126.8,125.0(d,JP−C=3.3Hz)
〔4〕31P−NMR(121MHz,CD3OD):δ50.2
〔1〕1H−NMR(500MHz,アセトン−d6);δ8.27(4H,d,J=8.5Hz),8.14(4H,d,J=8.5Hz),7.79(8H,brs),7.77(4H,d,J=8.5Hz),7.68(4H,brs),7.58(4H,t,J=8.5Hz),7.36(4H,t,J=8.5Hz),7.16(4H,d,J=8.5Hz),N−H protons were not found due to broadening.
〔2〕13C−NMR(126MHz,アセトン−d6):
δ162.6(q,JB−C=50.0Hz),135.5,134.9(d,JP−C=5.0Hz),133.6,133.0,131.5,130.0(q,JF−C=31.8Hz),129.4,127.93,127.86,127.5(d,JP−C=2.3Hz),126.9,125.4(q,JF−C=272.5Hz),124.9(d,JP−C=3.3Hz),118.5
〔3〕19F−NMR(282MHz,アセトン−d6):δ−62.6
〔4〕31P−NMR(121MHz,アセトン−d6):δ50.7
〔5〕IR(KBr):3386,3059,1508,1356,1279,1126,988,814,757,713cm−1
〔6〕HRMS(ESI−TOF);Calcd for C40H28N4P+([M]+)595.2046.Found 595.2073
〔7〕[α]D 22;−2.6°(c=0.57,CHCl3)
〔1〕1H−NMR(500MHz,CD3OD);δ8.19(2H,s),8.08(2H,d,J=8.0Hz),7.90(2H,d,J=8.0Hz),7.82(2H,d,J=8.0Hz),7.73(4H,dt,J=7.5,1.5Hz),7.52(2H,t,J=8.0Hz),7.45(4H,tt,J=7.5,1.5Hz),7.39(2H,tt,J=7.5,1.5Hz),7.38(2H,t,J=7.5Hz),7.26(2H,td,J=8.0,1.5Hz),7.11(2H,d,J=8.0Hz),7.08(2H,td,J=8.0,1.5Hz),6.99(2H,d,J=8.0Hz),6.76(2H,d,J=8.0Hz),N−H protons were not found due to deuteration.
〔2〕13C−NMR(126MHz,CD3OD);δ139.3,138.3(d,JP−C=3.2Hz),134.4(d,JP−C=5.0Hz),134.1,133.9(d,JP−C=1.4Hz),133.5,132.9(d,JP−C=1.4Hz),132.5,131.9(d,JP−C=3.7Hz),131.0,130.9,130.7(d,JP−C=2.3Hz),130.2,129.4,129.3,129.2,128.3,128.1,128.0,127.5,127.4,127.2(d,JP−C=2.3Hz),126.6,125.0(d,JP−C=3.8Hz)
〔3〕31P−NMR(121MHz,CD3OD);δ44.3
〔1〕1H−NMR(500MHz,アセトン−d6);δ8.20(2H,s),8.18(2H,d,J=8.5Hz),7.98(2H,d,J=8.5Hz),7.95(2H,d,J=8.5Hz),7.79(8H,brs),7.70−7.63(8H,m),7.62(2H,t,J=8.5Hz),7.452(2H,d,J=8.5Hz),7.449(2H,t,J=8.5Hz),7.41(4H,t,J=8.5Hz),7.37(2H,d,J=8.5Hz),7.36(2H,t,J=8.5Hz),7.18(2H,t,J=8.5Hz),7.05(2H,d,J=8.5Hz),6.86(2H,d,J=8.5Hz),N−H protons were not found due to broadening.
〔2〕13C−NMR(126MHz,アセトン−d6);δ162.6(q,JB−C=50.0Hz),138.7,138.1(d,JP−C=3.2Hz),135.5,134.4(d,JP−C=5.5Hz),133.7,133.4,132.8,132.4(d,JP−C=1.8Hz),132.2,130.9,130.0(q,JF−C=31.6Hz),129.9(d,JP−C=2.8Hz),129.7,129.2,129.1,128.9,128.1,127.8,127.7,127.33,127.29,126.4,126.2(d,JP−C=2.4Hz),125.4(q,JF−C=273.0Hz),124.9,118.5, two carbons were not found probably due to overlapping.
〔3〕19F−NMR(282MHz,アセトン−d6);δ−62.6
〔4〕31P−NMR(121MHz,アセトン−d6);δ45.1
〔5〕IR(KBr);3348,3064,1703,1610,1508,1419,1356,1279,1126,989,887,751,713cm−1
〔6〕HRMS(ESI−TOF);Calcd for C52H36N4P+([M]+)747.2672.Found 747.2688
〔7〕[α]D 23;−40.0°(c=0.50,CHCl3)
〔1〕1H−NMR(500MHz,CD3OD);δ8.09(2H,s),8.07(2H,d,J=8.5Hz),7.96(2H,d,J=8.5Hz),7.95(2H,d,J=8.5Hz),7.54(2H,t,J=8.5Hz),7.46(2H,t,J=8.5Hz),7.41(2H,t,J=8.5Hz),7.33−7.25(6H,m),7.20(2H,t,J=8.5Hz),7.01(2H,d,J=8.5Hz),6.90(2H,d,J=8.5Hz),N−H protons were not found due to deuteration.
〔2〕13C−NMR(126MHz,CD3OD);δ151.7(ddd,JF−C=249.2,10.0,3.8Hz),140.3(dt,JF−C=252.3,15.2Hz),136.7(d,JP−C=6.0Hz),136.3,135.7(td,JF−C=9.2,4.5Hz),134.4,133.8,133.6,132.9,132.6,132.5(d,JP−C=3.9Hz),131.8,131.2,129.7,129.3,128.4,128.3,128.1,127.8,127.5,126.9(d,JP−C=1.0Hz),126.7,124.2(d,JP−C=3.8Hz),115.4(dd,JF−C=16.9,4.5Hz)
〔3〕19F−NMR(282MHz,CD3OD):δ−136.7(dd,J=18.9,8.7Hz),−163.8(tt,J=20.6,6.8Hz)
〔4〕31P−NMR(121MHz,CD3OD);δ46.4
〔1〕1H−NMR(500MHz,アセトン−d6);δ8.15(2H,d,J=8.5Hz),8.14(2H,s),8.01(2H,d,J=8.5Hz),8.00(2H,d,J=8.5Hz),7.79(8H,brs),7.68(4H,brs),7.63(2H,t,J=8.5Hz),7.51(2H,t,J=8.5Hz),7.40(2H,t,J=8.5Hz),7.33−7.24(8H,m),7.09(2H,d,J=8.5Hz),6.91(2H,d,J=8.5Hz),N−H protons were not found due to broadening.
〔2〕13C−NMR(126MHz,アセトン−d6);
δ162.6(q,JB−C=50.0Hz),151.1(ddd,JF−C=249.1,9.6,3.7Hz),139.6(dt,JF−C=251.9,2.8Hz),136.0,135.8,135.5,135.4,134.0,133.4,132.8,132.4,132.2,131.1,130.0(q,JF−C=31.6Hz),129.6,129.2,128.3,128.2,127.7,127.6,126.7,126.6,125.4(q,JF−C=272.4Hz),124.4(d,JP−C=4.2Hz),118.5,115.2(dd,JF−C=17.0,5.0Hz),three carbons were not found probably due to overlapping.
〔3〕19F−NMR(282MHz,アセトン−d6);δ−62.6,−135.7,−162.3
〔4〕31P−NMR(121MHz,アセトン−d6);δ44.5
〔5〕IR(KBr);3381,3064,1615,1530,1420,1356,1280,1127,1050,752cm−1
〔6〕HRMS(ESI−TOF);Calcd for C52H30F6N4P+([M]+)855.2107.Found 855.5109
〔7〕[α]D 24;10.5°(c=0.25,CHCl3)
ニトロオレフィン(2)として、ニトロスチレンを用いた。芳香族アミンとして表1に示すアリール基(Ar1)を持つアニリン誘導体を用いた。以下の方法により、β−アミノニトロアルカンを合成した。
ニトロオレフィン(2)として、表2に示す一価の炭化水素基(R)を持つニトロオレフィンを用いた。芳香族アミンとして、2,4−ジメトキシアニリンを用い、テトラアミノホスホニウム塩として、上記「2c・BArF」を用いた。これらを用いて、上記と同様の方法により、β−アミノニトロアルカンを合成した。但し、反応時間は基質であるニトロオレフィン(2)に応じて変更している(表2に記載)。そして、得られたβ−アミノニトロアルカンの収率及び鏡像過剰率を測定した。その結果を表2に示す。鏡像過剰率の測定方法は上記の通りである。
Claims (12)
- R1及びR8が、それぞれ独立に、水素原子、炭素数4〜15のアリール基又はハロゲン原子の置換基を有する炭素数4〜15のアリール基である請求項1に記載の光学活性アリールアミノホスホニウム塩。
- R 1 及びR 8 が、それぞれ独立に、水素原子、フェニル基又はハロゲン化フェニル基である請求項1又は2に記載の光学活性アリールアミノホスホニウム塩。
- R 2 、R 7 、R 9 、R 10 、R 15 及びR 16 は、それぞれ独立に、水素原子又は炭素数1〜3のアルキル基である請求項2又は3に記載の光学活性アリールアミノホスホニウム塩。
- X−はテトラアリールホウ酸イオンである請求項1乃至4のいずれかに記載の光学活性アリールアミノホスホニウム塩。
- 請求項1乃至5のいずれかに記載の光学活性アリールアミノホスホニウム塩を含む不斉合成反応用触媒。
- 上記不斉合成反応は、電子吸引性基により活性化された炭素−炭素不飽和結合への求核付加反応である請求項6記載の不斉合成反応用触媒。
- 上記不斉合成反応は、ニトロオレフィン類及び芳香族アミンを反応させるβ−アミノニトロアルカンの合成反応である請求項6又は7記載の不斉合成反応用触媒。
- 請求項1乃至5のいずれかに記載の光学活性アリールアミノホスホニウム塩の存在下、電子吸引性基により活性化された炭素−炭素不飽和結合への求核付加反応を行い、光学活性化合物を製造する方法。
- 式(2)で表される化合物がニトロオレフィン類である請求項10記載の光学活性化合物を製造する方法。
- 上記芳香族アミンが、芳香環に電子供与性基を有する芳香族アミンである請求項10又は11記載の光学活性化合物を製造する方法。
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