In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Spectrochemistry of Enols and of Enolic Derivatives, published in 1912, which mentions a compound: 1001-26-9, mainly applied to , Electric Literature of C7H12O3.
The following physical constants have been determined: β-Methoxystyrene, PhCH : CHOMe, b13 99°; d423.3 0.9894; d424.3 0.9886; d420 0.992; nα 1.55467; nβ 1.56197; nβ 1.58139; nβ 1.59962 at 24.3°; nD20 1.5639; Mα 43.52; MD 43.99; Mβ-Mα 1.71; Mτ-Mα 2.86; EM 2.50, 2.65, 0.69 and 1.24, resp. β-Ethoxystyrene, PhCH : CHOEt, b14 105°; d421.4 0.9714; d421.2 0.9716; d420 0.973; nα 1.54346; nD 1.55023; nβ 1.56838; nτ 1.58530 at 21.2°; nD20 1.5508; Mα 48.08; MD 48.57; Mβ-Mα 1.81; Mr-Mα 3.03; EM 2.46, 2.63, 0.72 and 1.30, resp. α-Methoxystyrene, MeOCPh:CH2 b18 90.5°; b. 197°; d425.1 0.9935; d425.0 0.9936; d420 0.998; nα 1.53402; nD 1.53997; nβ 1.55521; nτ 1.56918 at 25.0°; nD20 1.5422; Mα 41.95; MD 42.34; Mβ-Mα 1.38; Mr-Mα 2.28; EM 0.93, 1.00, 0.36 and 0.66, resp. α-Ethoxystyrene, EtOCPh : CH2, b18 99.6; d423.0 0.9675; d423.2 0.9673; d420 0.970; nα 1.52233; nD 1.52775; nβ 1.54198: nτ 1.55480, at 23.2°; nD20 1.5292; Mα 46.72; MD 47.13; Mβ-Mα 1.46; Mr-Mα 2.41; EM 1.10, 1.18, 0.37 and 0.68, resp. Et β-ethoxyacrylate, EtOCH : CHCO2Et, b11 83.5-4.0°; d417.8 0.9957; d418.1 0.9953; d420 0.994; nα 1.44442; nD 1.44802; nβ 1.45706; nr 1.46504, at 18.1°; nD20 1.4472; Mα 38.49; MD 38.76; Mβ-Mα 0.94; Mr-Mα 1.54. Another specimen, b10 78.5-9.0°; d417.8 0.9956; d416.7 0.9965; d420 0.994; nα 1.44497; nD 1.44852; nβ 1.45765; nτ 1.46574 16.7°; nD20 1.4470; Mα 38.48; MD 38.75; Mβ-Mα 0.95; Mr-Mα 1.55; EM (mean) 1.34, 1.41, 0.28, 0.49, resp. Et β-ethoxy-α-methylacrylate, EtOCH : CMeCO2Et, b. 195.6°; d418.4 0.9806; d421.0 0.9788; d420 0.980; nα 1.44649; nD 1.45009; nβ 1.45931; nτ 1.46760 at 21.6°; nD30 1.4508; Mα 43.10; MD 43.42; Mβ-Mα 1.08; Mr-Mα 1.70; EM 1.35, 1.45, 0.34 and 0.53, resp. Me α,α-dimethoxypropionate, (MeO)2CMeCO8Me, d419.2 1.0675; d419.35 1.0674; d420 1.067; nα 1.40915; nD 1.41127; nβ 1.41611; nτ 1.42017, at 19.35°; nD20 1.4110; Mα 34.31; MD 34.17; Mβ-Mα 0.52; Mr-Mα 0.82. Another specimen, b18 66.0-66.5°; d419.8 1.0678; d420 1.066; nα 1.41035; nD 1.41221; nβ 1.41721: nr 1.42130, at 17.6°; nD20 1.4111; Mα 34.39; MD 34.53; Mτ-Mα 0.50; Mr-Mα 0.08; EM (mean) -0.35,-0.35, -0.01 and -0.01, resp.: EM (mean) -0-24, -0.24, -1% and -1%, resp. Meα-methoxyacrylate, CH2:C(OMe)CO2Me, b1353-4°; d419 1.0701; d418.95 1.0702; 420 1.069; na1.42911; nD 1.43207; nβ 1.43960; nτ 1.44614, at 18.95°; nD20 1.4316; Ma 27.97; MD 28.14;Mβ-Mα 0.60; Mτ-Mα 0.97. Another specimen, b13 55-6°; d420.7 1.0674; d420.35 1.0677;d420 1.068; na 1.42886; nD 1.43177; nβ 1.43935; nτ 1.44585, at 20.35°; nD20 1.4316; Ma28.03; MD 28.19; Mβ-Mα, 0.59; Mτ-Mα 0.96; EM (mean) 0.04, 0.05, 0.07 and 0.14, resp. Et α,α-diethoxypropionate, (EtO)2CMeCO2Et, d417.6 0.9795; d418.2 0.9790; d420 0.978;na 1.41255; nD 1.41449; nβ 1.41949; nβ 1.42358, at 18.2°; nD20 1.4104; Mα 48.37; MD48.57; Mβ-Mα 0.72; Mτ-Mα 1.14. Another specimen, b11 81.5-2.5°; d418.2 0.97°3 d417.1 0.9792; d420 0.977; na 1.41314; nD 1.41508; nβ 1.42001; nτ 1.42419, at 17.1°; nD20 1.4101;Ma 48.42; MD 48.62; Mβ-Mα 0.71; Mτ-Mα 1.14; EM (mean) -0.09, -0.10 -0.01 and 0.02, resp.; E∑ (mean) -0.05, -0.05, -1% and -2%, resp. Et α-ethoxyacrylate,CH2: C(OEt)CO3 Et, b700 178-80°; d418.2 0.9937: d417.8 0.9940; d420 0.992; na 1.42941;0.75; Mβ-Mα 1.20. Another specimen, b13 72.5-4.5°; d417.2 0.9956; d420 0.993; na 1.42941;nD 1.43241; nβ 1.43925; nτ 1.44536, at 17.2°; nD20 1.4312; Ma 37.35; MD 37.57; Mβ-Mα 0.74; Mτ-Mα 1.20; EM (mean) 0.23, 0.24, 0.08 and 0.14, resp. The above results show that the exaltation due to a C-C conjugated linkage is increased considerably by the presence of substituents containing O if they are linked to an end (side) C at., whereas their attachment to a middle C at. produces only a slight and variable effect on the exaltation.
《Spectrochemistry of Enols and of Enolic Derivatives》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(Ethyl 3-Ethoxy-2-Propenoate)Electric Literature of C7H12O3.
Reference:
Bromide – Wikipedia,
bromide – Wiktionary