NMR(CDCl3)δ0.91(d,3H);0.93(d,3H);1.37(s,9H);1.68(brs,2H);2.40(d,2H);2.68(d,2H);2.87(dd,1H);2.99(dd,1H);3.46(dd,1H);3.75(brs,1H);3.80(brs,1H);4.69(d,1H);7.19-7.32(m,4H).B.化合物32。在环境温度和氮气气氛下,用271mg4-氟苯磺酰氯和117mg碳酸氢钠相继处理391mg实施例1A所...
1H NMR(CDCl3,400MHz):δ8.66(s,1H),7.44(d,J=8.8Hz,1H),7.19(t,J=8.4Hz,1H),5.68(s,1H),4.16(d,J=9.2Hz,1H),4.05(s,3H),4.02-3.98(m,2H),3.87(d,J=9.2Hz,1H),2.66-2.60(m,1H),2.17-2.09(m,1H),1.75(s,3H)。 LC-MS:(m/z)278.1(MH+)tR(分钟,方法1)=1.84分钟。 [α]20D=...
1H NMR (300 MHz, CDCl3): δ 2.38 (s, 3H), 6.95 (s, 1H), 7.04 (t, J = 4.2 Hz, 1H), 7.26–7.21 (m, 4H), 7.67–7.64 (m, 3H) ppm; 13C NMR (100 MHz, CDCl3): δ 21.4, 122.2, 124.9, 125.6, 127.1, 127.7, 129.2, 130.0, 133.3, 135.7, 144.0 ppm; MS (70 eV), m/...
C NMR、MS 等 分析方法,对化合物[1] - [3] 进行结构鉴定,结构 见Fig 1。 OH O H CO 3 [2] O O O OH HO H CO 3 HO H CO 3 OCH 3 [3] [1] Fig 1 Chemical structures of [1] [3] 化合物[1]:无色晶体; 1 H NMR (CDCl3, 600 ...
In CDCl3 solution, the 1H NMR spectra showed that AlArEt2(THF) compounds exist as a mixture of four species of formulas of AlArxEt3-x (THF) (x = 0, 1, 2, or 3). AlArEt2(THF) compounds were found to be superior and atom-economic reagents for asymmetric aryl additions to organic...
13C NMR (75 MHz, CDCl3, ppm) δ = 172.8, 120.9, 31.6, 28.7, 21.8. REPs: Prop-2-yn-1-yl-4,4-dinitropentanoate (PDNP) and but-3-yn-1-yl-4,4-dinitropentanoate (BDNP) Two types of REPs, PDNP and BDNP, were prepared according to our previous paper (see Scheme 1 for ...