手性药物催化β酮酸酯不对称α羟基化反应研究
No.3
宫斌等:手性药物催化伊酮酸酯不对称a.羟基化反应研究
405
J:39.1,53.8,80.8,122.4,128.2,128.3,135.5,139.1,
150.8,171.6,199.7;HRMS(EI)calcdforC11H9Br04:
283.9684,found
283.9686;HPLC:rR(major)=12.8
min,
rR(minor)=15.7rain.
(研.5.氯.6.溴一2.羟基.1一茚酮.2.甲酸甲酯(29):淡黄色固体,111.P.156~158℃;1HNMR(400MHz,
CDCl3)6:3.19(d,J=17.6Hz,1H),3.66(d,J=17.6Hz,
1H),3.76(s,3H),3.96(bs,IH),7.63(s,1H),8.05(s,lH);
”CNMR(100MHz,CDCl3)巧:38.8,53.9,80.8,123.2,
128.5,130.2,133.4,142.9,151.6,171.4,198.6;HRMS
(EI)calcdforCnHsBrCl04:317.9294,found317.9298;
HPLC:rR(major)-----16.5rain.rR(minor)=20.9min.
(回.2.羟基.1-茚酮.2.甲酸甲酯(2h):HPLC【坎以.Hexane):V(i.P向H)=95:5。flow
rate
1.0mL/min,254rim]:rR(major)=25.2rain.rR(minor)=28.8
min.
(跚_4.甲氧基.2.羟基.1.茚酮.2.甲酸甲酯(2i):灰白色固体,m.P.141~143℃;1HNMR(400MHz,CDCl3)
J:3.1l(d,J=17.6Hz,1H),3.66(d,,=17.6Hz,1H),
3.74(s,3H),3.92(s,3H),7.10~7.12(m,IH),7.38~7.43(m,2H);”CNMR(1
00MHz,CDCl3)J:36.3,53.6,55.7,
80.4,116.5,116.8,129.9。135.0,141.4。156.9,172.2,
201.2;HRMS(EI)ealcdforC12H1205:236.0685,found
236.0691;HPLC:fa(minor)=17.7min.rR(major)=19.7
min.
(回_4.甲氧基.2.羟基.1.茚酮.2.甲酸乙酯(2j):淡黄色固体,m.P.41~43℃;1HNMR(400MHz,CDCl3)巧:
1.16(t,J=8.0Hz,3H),3.08(d,,=17.6Hz,1H),3.62(d,
卢17.6
Hz,1H),3.89(s,3H),4.19(q,J=4.8Hz,2H),7.07"-7.09(m,1H),7.24~7.36(m,2H);”CNMR(100
MHz,CDCl3)6:14.0,36.2,55.6,62.8,80.1,116.2,116.6,
129.6,134.9,141.43,156.7,171.6,201.1;HRMS(ES+)
caledfor
C13H1405[M+Na]+:273.0739,found
273.0742;
HPLC:rR(minor)=13.7min,rg(major)=15.3rain.
(研-4一甲氧基.2。羟基.1.茚酮 2一甲酸苄酯(2k):白色
油状固体,1HNMR(400
MHz,CDCl3)6:3.1l(d,卢17.6
Hz,1H),3.66(d,.,=17.6Hz,1H),3.90(s,3H),4.70(s,
1H),5.14(d,卢12.4
Hz,IH),5.22(d,
/=12.4Hz,
1H),7.09"-'7.37(m,8H);¨CNMR(100MHz,CDCl3)d:
36.3,55.7,68.2,80.6,116.5,l16.9,127.2,127.8,127.9,128.6,128.7,129.8,135.0,135.1,141.4,156.9,171.6,
201.0;HRMS(ES+)calcdforC18H1605【M+Na]+:
335.0895,found
335.0908;HPLC
fAD.H
column,
Z(n-hexane):坎f-PrOH)=80:20,flow
rate
1.0mL/min,254
nm】:rR(major)-----22.7min,rR(minor)=23.7
rain.