7.6,1.2Hz,lH),7.53(td,J = 7.6,1.2Hz,lH),7.34-7.25(m,4H), 7.25-7.19(m,lH) ,4.72-4.62(m,lH) ,4.41(dd,J = 9.2,8.6Hz, 1H) ,4.20(dd,J = 8.6, 8.0Hz, 1H) ,3.23(dd,J= 13.6,5.6Hz , 1H) ,2.80(dd,J= 13.6,8.0Hz , 1H) ;13C 匪R: (100.6MHz,CDC13)S161.3,137.5,134.6,132.4,131.1,130.1,129.3,128.5,126.6,117.8, 111.7,72.3,68.2,41.4;HRMS(EI)calculated for[Ci7Hi4N20]+requires m/z 262.1106, found m/z 262.1107.
[0100] 實例24
[0101]
[0102] (S)-4-benzyl-2-(2-fluorophenyl)-4,5-dihydrooxoxazoline(IIIx): yield 91% ; [a]D20 = -21.7(c = 1.00,CH2Cl2);IR(neat) :2923,2854,1647,1612,1495,1455, 1358cm-S1!!匪R: (400.1MHz,CDC13)S7.85(td,J = 7.6,1.6Hz,1H),7.44-7.36(m,lH), 7·32-7.18(m,5H),7.18-7.08(m,2H),4.66-4.56(m,lH),4.29(dd,J=9.2,8.6Hz,lH),4.11 (dd,J = 8.6,7.6Hz,lH),3.26(dd,J=13.6,5.0Hz,lH) ,2.74(dd,J=13.6,9.0Hz,1H);13C NMR: (100.6MHz,CDC13)S161 ·0((!,Jc-f = 256.7),160.5(d,Jc-F = 5.1),137.6,132.7(d,Jc-F = 8.7),130.9(d,Jc-f=1.4),129.1,128.4,126.4,123.7(cI,Jc-f = 3.6) ,116.5(d,Jc-F = 21.9),115.9(d,Jc-f=10.2),71.2,67.8,41.4;19F NMR:(III76.5MHz,CDCl3)S-109.3;HRMS (El)calculated for[Ci6Hi4N0F]+requires m/z255.1059,found m/z 255.1055.
[0103] 實例25
[0104]
[0105] (S)-2-([1,1'-biphenyl]-2-yl)-4-benzyl-4,5-dihydrooxazole(Illy): yield 88% ;[a]D20 = -43.4(c = 1.03,CHCl3);IR(neat) :3057,1657,1590,1484,1438,1311〇11_1;^ NMR: (400.1MHz,CDCl3)S7.75(dd,J = 8.0,1.6Hz,lH),7.47(ddd,J = 8.0,7.6,1 ·6Ηζ,1Η), 7.38(dd,J=7.2,1·2Ηζ,1Η),7.29-7.37(m,6H),7.24-7.29(m,2H),7,17-7.23(m,lH), 7.12-7.17(m,2H) ,4.39-4.48(m,lH),4.06(dd,J = 9.2,8·4Ηζ,1H),3.82(dd,J = 8.4, 7.6Hz, 1H),3.04(dd,J=13.2,5.2Hz, 1H),2.69(dd,J=13.2,8.4Hz, 1H) ;13C 匪R: (100·6ΜΗζ,αχη3)δ165·4,141·8,141·1,137·8,130·4,130·2,130·0,129·3,128·4,128·3, 127.9,127.6,127.1,127.0,126.4,71.8,67.7,41.2;HRMS(EI)calculated for[C22Hi9N0]+ requires m/z 313.1467,found m/z 313.1471.
[0106] 實例26
[0107]
[0108] (S)-4~benzy1-2-(2-(pyridin-2-yl)phenyl)-4,5-dihydrooxazole(IIIz): yield 75% ; [a]D20 = -38.8(c = 1.04,CHC13) ; IR(neat): 3393,3060,3028,2923,1654, 1587,1465cm-S1!! NMR: (400.1MHz,CDCl3)S8.65(dq,J = 4.8,0.8Hz, 1H) ,7.83(dd,J = 8.0, 0.8Hz,lH),7.65(ddd,J = 7.6,7.6,2.0Hz,lH),7.59(dd,J = 7.6,1.2Hz,lH),7.53(ddd,J = 7.6,7.6,1 ·2Ηζ,1H),7.45(ddd,J = 7.6,7.6,1.2Hz,lH),7.36(ddd,J = 8.0,0.8,0.8Hz, lH),7.26-7.32(m,2H),7.15-7.25(m,4H),4.41-4.46(m,lH),4.10(dd,J=9.2,8.4Hz,lH), 3.88(dd,J = 8.4,7.6Hz,lH),3.09(dd,J=14.0,5.2Hz,lH) ,2.73(dd,J=14.0,8.4Hz,lH) ;13C 匪R:(100.6MHz,CDC13)S165.2,158.8,149.0,140.7,137.9,135.8,130.6,130.2, 129.9,129.3,128.4,128.2,127.6,126.4,123.2,121.9,71.8,67.8,41.2;HRMS(EI) calculated for[C2iHi8N20]+requires m/z314.1419,found m/z 314.1413.
[0109] 實例27
[0110]
[0111] (S,E)-4-benzyl-2-styry1-4,5-dihydrooxoxazoline(IIIaa):yield 67%; M.p.78-80〇C;[a]D20 = +0.9(c = 1.14,CHCl3);[a]D20 = -58.2(c = 1.07,CH2Cl2);Lit14:[a]D20 = -7.4(c = l .21 ,MeOH) ;>99%ee,determined by HPLC,HPLC conditions:Chiralcel 0J- H,n-hexane/i_Pr0H = 90/10,1 · OmL/min,n = 254nm,tr 11.4(minor), 12.6(ma jor) ; IR (neat):3060,2922,1952,1652,1605,1495,1362cm-S1!! NMR: (400.1MHz,CDCl3)S7.46((1, J = 6.8Hz,2H),7.39-7.26(m,6H),7.25-7.17(m,3H),6.65(d ,J=16.4Hz,lH),4.56-4.44(m, 1H) ,4.25(dd,J = 8.8,8.6Hz,lH),4.02(dd,J = 8.6,7.6Hz,lH),3.15(dd,J=13.6,5.4Hz, 1H) ,2.70(dd,J=13.6,8.4Hz,lH) ;13C 匪R: (100.6MHz,CDC13)S 163.6,139.9,137.8, 135.1,129.3,129.0,128.7,128.4,127.3,126.4,115.1,71.4,67.6,41.6;HRMS(EI) calculated for[Ci8Hi7N0]+requires m/z 263.1310,found m/z 263.1303.
[0112] 實例28
[0113]
[0114] (S)-4~benzyl-2-(2-(diphenylphosphino)phenyl )-4,5-dihydrooxazole (Illab) :yield56%,[a]D2° = +24.6(c = 1.250,CHCl3) JH MMR: (400. lMHz,CDCl3)S7.86 (dd,J=7.2,2.8Hz,lH),7.26-7.40(m,12H),7.20-7.25(m,2H),7.14-7.20(m,1H),7.07(d, J = 7.2Hz,lH) ,6.86(dd ,J = 7.2,4.4Hz,lH) ,4.29-4.39(m, 1H) ,4.03(dd ,J = 9.2,8.4Hz , 1H) ,3.77(t,J = 8.0Hz,lH) ,2.91 (dd,J= 14.0,4.8Hz,lH),2.11 (dd,J= 14.0,9.2Hz,lH); 31P NMR:(162.0MHz,CDCl3)S-4.7.
[0115] 實例29
[0116]
[0117] (S)-2-(4-benzyl-4,5-dihydrooxazol-2-yl)phenol(8a) :yield 56% ; [a]〇20 = -6.65(c=l .045,CHC13) JH MIR: (400.1MHz,CDC13)S12.16(br,lH),7.61(dd, J = 8.0, 1.6Hz,lH),7.36(ddd ,J = 8.4,7.2,1.6Hz,lH),7.30(dd ,J = 7.6,1.2Hz,2H),7.20-7.26(m, 3H) ,7.00(dd,J = 8.4,0.8Hz,lH),6.85(ddd,J = 7.6,7.6,0.8Hz,lH),4.55-4.65(m,lH), 4.37(dd ,J = 8.8,8.4Hz,lH),4.11(dd ,J = 8.4,7.2Hz,lH),3.09(dd ,J=13.2,9.3Hz,lH), 2.80(dd ,J = 13.2,7.6Hz,lH).
[0118] 實例30
[0119]
[0120] (S)-2-(4-benzyl-4,5-dihydrooxazol-2-yl )aniline(IIIad):yield 87%; [a]D2Q = +48.l(c = 0.98,CHC13) ;Lit17: [(6^ = +24.7(0 = 1.00,01(:13)5? MMR: (400.1MHz, CDCl3)S7.67(dd,J=8·0,1·2Ηζ,1Η),7·26-7.33(m,2H),7.15-7.26(m,4H),6.60-6.70(br, 2H),6.07(s,2H),4.53-4.63(m,lH),4.25(dd ,J = 9.2,8.4Hz,lH),4.00(dd ,J = 8.4,7.6Hz, lH),3.11(dd ,J = 14.0,6.0Hz,lH),2.74(dd ,J = 14.0,8.0Hz,lH).
[0121] 以上例舉的僅是本發(fā)明的優(yōu)選實施方式,本發(fā)明并不限于以上實施例,本領(lǐng)域技 術(shù)人員在不脫離本發(fā)明的精神和構(gòu)思的前提下直接導(dǎo)出或聯(lián)想到的其他改進(jìn)和變化,均應(yīng) 認(rèn)為包含在本發(fā)明的保護(hù)范圍內(nèi)。
【主權(quán)項】
1. 一種含2-取代噁唑啉衍生物的制備方法,其特征在于,在有機溶劑中,將式I所示的 鹵化物,式II所示的噁唑啉環(huán),鈀催化劑,配體與堿以1:1-2.0:1 %-50mol% : 1 %-50mol% : 1-5的配比混合均勻,在0-150°C溫度下反應(yīng)24-72小時,分離純化,得到式III所示的2-取代 的噁唑啉化合物,合成路線如下所示:式I和式III中Ri為(:1-C6的烷基,環(huán)烷基,羥基,C1-C6的烷氧基,羥甲基,氰基,鹵素,二 芳基磷基,亞胺基,胺基,氨烷基;式II和式III中R2,R3和R4為C1-C6的烷基,環(huán)烷基,芳基;式 I和式III中X為素,類素,Y為N或C。2. 根據(jù)權(quán)利要求1所述的含2-取代噁唑啉衍生物的制備方法,其特征在于,所述的鈀催 化劑為卩(1(??113)4,?(1(:12,?(1(:12(??113)2,?(1((^。)2,?(1(??113)2(:12,?(12((^&)3.01(:13任意一 種,所述配體為單磷配體和雙膦配體,所述堿為無機堿,所述有機溶劑為高沸點非極性溶 劑。3. 根據(jù)權(quán)利要求1或2所述的含2-取代噁唑啉衍生物的制備方法,其特征在于,式I所示 的鹵化物與式II所示的噁唑啉環(huán),鈀催化劑,配體,堿摩爾比優(yōu)選1:1.2-1.5: 2.5-10m〇l % : 2.8-12mol%,2.0-4.0〇4. 根據(jù)權(quán)利要求1所述的含2-取代噁唑啉衍生物的制備方法,其特征在于,所述的X優(yōu) 選Cl,Br〇5. 根據(jù)權(quán)利要求1或2所述的含2-取代噁唑啉衍生物的制備方法,其特征在于,所述的 Pd 優(yōu)選 Pd(OAc)2。6. 根據(jù)權(quán)利要求1或2所述的含2-取代噁唑啉衍生物的制備方法,其特征在于,所述的 配體優(yōu)選dppe。7. 根據(jù)權(quán)利要求3所述的含2-取代噁唑啉衍生物的制備方法,其特征在于,所述的堿優(yōu) 選叔丁醇鋰。8. 根據(jù)權(quán)利要求1或2或4所述的含2-取代噁唑啉衍生物的制備方法,其特征在于,所述 的堿優(yōu)選叔丁醇鋰。9. 根據(jù)權(quán)利要求1或2所述的含2-取代噁唑啉衍生物的制備方法,其特征在于,所述的 有機溶劑優(yōu)選1,4-二氧六環(huán)。
【專利摘要】本發(fā)明公開一種含2-取代噁唑啉衍生物的制備方法,在有機溶劑中,將式I所示的鹵化物,式II所示的噁唑啉環(huán),鈀催化劑,配體與堿以1:1-2.0:1%-50mol%:1%-50mol%:1-5的配比混合均勻,在0-150溫度下反應(yīng)24-72小時,分離純化產(chǎn)物,得到式III所示的2-取代的噁唑啉化合物,本發(fā)明提供了一條高效快速合成含2-取代的噁唑啉化合物的路線,使用了催化量的鈀和配體,反應(yīng)可以高產(chǎn)率,高適用性的進(jìn)行,立體專一性,可以得到對映體純的2-取代的噁唑啉化合物,合成的目標(biāo)產(chǎn)物可以直接作為不對稱催化的配體。
【IPC分類】C07F9/6527, C07D413/10, C07D263/14, C07D413/04, C07D417/04, C07D413/14, C07D263/12, C07D263/10
【公開號】CN105601626
【申請?zhí)枴緾N201510745883
【發(fā)明人】陸展, 席拓, 梅運才
【申請人】浙江大學(xué)
【公開日】2016年5月25日
【申請日】2015年11月4日