H. Rudler, B. Denise, Y. Xu, A. Parlier, J. Vaissermann
FULL PAPER
Methyl
4-(1-Carboxy-1-methylethyl)-2-phenyl-4H-pyridine-1-car-
H), 3.38 (m, 1 H), 3.51 (s, 3 H), 4.96 (m, 1 H), 5.36 (m, 1 H), 6.92
(d, J = 8 Hz, 1 H), 7.4–7.7 (m, 5 H), 11.00 (s, 1 H) ppm. 13C NMR:
δ = 21.34, 21.47, 39.27, 47.23, 53.39, 107.31, 116.99, 126.73, 128.4–
137.7, 151.49, 182.73, 190.10 ppm.
1
boxylate (26b): 10% yield (0.08 g), liquid. H NMR: δ = 1.14 (s, 3
H), 1.16 (s, 3 H), 3.35 (s, 1 H), 3.72 (s, 3 H), 5.40 (m, 2 H), 7.02
(d, J = 4 Hz, 1 H), 11.00 (s, 1 H) ppm. 13C NMR: δ = 20.86, 41.87,
52.95, 53.47, 109.15, 112.91, 125.79, 125.8–138.4, 152.66,
183.15 ppm. C17H19NO4 (301.3): C 67.76, H 6.36, N 4.65; found C
68.55, H 6.37, N 4.65.
Methyl 2-(3-Carboxyallyl)-2H-pyridine-1-carboxylate (47k): 90%
yield (0.51 g), liquid. 1H NMR: δ = 2.25 and 2.51 (m, 2 H), 3.72
(s, 3 H), 4.79 and 4.92 (m, 1 H), 5.25 (m, 1 H), 5.48 (m, 1 H), 5.80
(d, J = 15Hz, 1 H), 5.90 (m, 1 H), 6.58 and 6.72 (d, J = 7 Hz, 1
H), 6.99 (m, 1 H), 10.8 (s, 1 H) ppm. 13C NMR: δ = 37.06, 37.20,
51.21, 51.35, 53.43, 105.91, 106.34, 121.05, 121.21, 122.43, 122.84,
123.51, 124.93, 125.49, 146.35, 146.49, 153.95, 171.34 ppm. MS:
calcd. for C11H16N2O4 [M + NH3]+ 241; found 241.
Methyl 3-Benzoyl-4-(1-carboxy-1-methylethyl)-4H-pyridine-1-car-
boxylate (33b): 90% yield (0.74 g), white solid, m.p. 154 °C. 1H
NMR: δ = 0.96 (s, 3 H), 1.01 (s, 3 H), 3.69 (s, 3 H), 4.07 (d, J =
6 Hz, 1 H), 5.05 (dd, J1 = 6 Hz, J2 = 8 Hz, 1 H), 6.80 (d, J = 8 Hz,
1 H), 7.2–7.6 (m, 6 H), 11.00 (s, 1 H) ppm. 13C NMR: δ = 20.19,
22.37, 39.27, 48.25, 54.28, 108.81, 118.45, 123.99, 128.4–137.6,
151.63, 182.16, 196.41 ppm. C18H19NO5 (329.3): C 65,64, H 5.81,
N 4.25; found C 65,93, H 5.88, N 4.18.
Methyl 2-(3-Carboxybut-2-enyl)-2H-pyridine-1-carboxylate (47l):
55% yield (0.33 g), liquid. 1H NMR: δ = 1.73 and 1.75 (s, 3 H),
2.24 and 2.54 (m, 2 H), 3.74 (s, 3 H), 4.78 and 4.91 (m, 1 H), 5.20
and 5.30 (m, 1 H), 5.46 (m, 1 H), 5.87 (m, 1 H), 6.57 and 6.70 (d,
J = 6.4 Hz, 1 H), 6.83 and 6.88 (m, 1 H), 10.2 (s, 1 H) ppm. 13C
NMR: δ = 12.05, 12.43, 32.27, 33.42, 51.32, 53.36, 53.87, 105.77,
106.24, 121.4–129.8, 139.12, 141.17, 151.86, 153.90, 173.10 ppm.
Methyl 3-Benzoyl-4-(1-carboxycyclohexyl)-4H-pyridine-1-carboxyl-
ate (33c): 90% yield (0.83 g), white solid, m.p. 165 °C. H NMR: δ
= 1.0–2.0 (m, 10 H), 3.76 (s, 3 H), 4.02 (m, 1 H), 5.15 (m, 1 H),
6.90 (d, J = 8 Hz, 1 H), 7.4–7.7 (m, 6 H), 11.00 (s, 1 H) ppm. 13C
NMR: δ = 23.3–30.3, 40.44, 54.08, 54.28, 108.49, 118.53, 123.97,
129.2–137.7, 151.73, 180.58, 196.41.
1
Methyl
2-(3-Carboxy-2-methylallyl)-2H-pyridine-1-carboxylate
(47m): 25% yield (0.16 g), liquid. 1H NMR: δ = 1.91, 1.96, 2.13
and 2.21 (s, 3 H), 2.6 (m, 2 H), 3.70 and 3.76 (s, 3 H), 4.82 (m, 1
H), 5.39 (m, 1 H), 5.50 (m, 1 H), 5.64 and 5.73 (s, 1 H), 5.92 (m,
1 H), 6.65 and 6.75 (d, J = 8 Hz, 1 H), 10.8 (s, 1 H) ppm. 13C
NMR: δ = 19.26, 26.05, 27.06, 30.94, 32.30, 36.48, 36.90, 42.17,
44.57, 50.16, 50.50, 51.10, 53.49, 106.30, 106.60, 108.59, 109.11,
117.52, 118.18, 118.39, 122.45, 122.95, 124.38, 124.59, 125.43,
157.86, 158.88, 171.65 ppm.
Dimethyl 4-(1-Carboxy-1-methylethyl)-4H-pyridine-1,3-dicarboxyl-
ate (34b): 65% yield (0.46 g), white solid, m.p. 161 °C. 1H NMR: δ
= 0.99 (s, 3 H), 1.01 (s, 3 H), 3.65 (s, 3 H), 3.77 (m, 1 H), 3.82 (s,
3 H), 5.09 (dd, J1 = 6 Hz, J2 = 2 Hz, 1 H), 6.90 (d, J = 6 Hz, 1 H),
7.97 (m, 1 H), 11.0 (s, 1 H) ppm. 13C NMR: δ = 20.36, 21.93, 39.63,
48.52, 51.98, 54.62, 108.44, 109.30, 124.69, 134.93, 151.97, 168.41,
183.45 ppm. C13H17NO6 (283.3): C 55.12, H 6.05, N 4.94; found C
54.77, H 6.34, N 5.00.
Methyl 2-(3-Carboxyallyl)-3-diethylcarbamoyl-2H-pyridine-1-car-
1
boxylate (48k): 85% yield (0.69 g), liquid. H NMR: δ = 1.15 (m,
Dimethyl 4-(1-Carboxy-1-methylethyl)-4H-pyridine-1,3-dicarboxyl-
ate (35b): 42% yield (0.28 g), white solid, m.p. 340 °C. 1H NMR
(MeOD): δ = 0.99 (s, 3 H), 0.96 (s, 3 H), 3.70 (d, J = 8 Hz, 1 H),
3.78 (s, 3 H), 5.04 (d, J = 8 Hz, 1 H), 6.87 (d, J = 8 Hz, 1 H), 7.92
(m, 1 H), 10.50 (s, 2 H) ppm. 13C NMR (MeOD): δ = 20.09, 23.42,
40.32, 49.80, 54.78, 109.73, 110.10, 125.22, 135.46, 153.11, 171.09,
180.37 ppm. C12H15NO6 (269.2): C 53.53, H 5.62, N 5.2; found C
53.90, H 6.23, N 5.29.
6 H), 2.52 (m, 2 H), 3.38 (m, 4 H), 3.77 (s, 3 H), 5.33 (m, 1 H),
5.33 and 5.43 (m, 1 H), 5.76 (d, J = 14 Hz, 1 H), 6.13 (m, 1 H),
6.75 and 6.85 (m, 1 H), 6.92 (m, 1 H), 11.5 (m, 1 H) ppm. 13C
NMR: δ = 13.41, 14.20, 36.33, 52.17, 53.66, 60.48, 123.4–127.5,
145.49, 145.79, 153.50, 154.22, 169.20, 170.21 ppm.
Methyl 4-(1-Carboxybut-3-enyl)-4H-pyridine-1-carboxylate (49n):
1
85% yield (0.51 g), liquid. H NMR: δ = 2.36 (m, 3 H), 3.41 (s, 1
H), 3.79 (s, 3 H), 4.82 (m, 2 H), 5.02 (m, 2 H), 5.76 (m, 1 H), 6.81
and 6.90 (d, J = 8 Hz, 2 H), 8.9 (m, 1 H) ppm. 13C NMR: δ =
31.94, 34.95, 51.67, 53.61, 106.76, 107.64, 116.92, 124.44, 135.43,
151.89, 179.48 ppm.
Methyl 4-(1-Carboxy-1-methylethyl)-3-cyano-4H-pyridine-1-carbox-
ylate (36b): 46% yield (0.29 g), white solid, m.p. 146 °C. 1H NMR:
δ = 1.11 (s, 3 H), 1.26 (s, 3 H), 3.52 (d, J = 5 Hz, 1 H), 3.82 (s, 3
H), 4.94 and 4.98 (d, J = 5 Hz, 1 H), 6.85 (m, 1 H), 7.59 (s, 1 H),
11.2 (s, 1 H) ppm. 13C NMR: δ = 20.30, 22.05, 41.03, 48.22, 54.56,
90.24, 106.69, 119.12, 123.97, 138.23, 150.58, 181.57 ppm. MS:
calcd. for C12H17N3O4 [M + NH3]+ 268; found 268.
Methyl 4-(1-Carboxypent-4-enyl)-4H-pyridine-1-carboxylate (49o):
1
55% yield (0.42 g), liquid. H NMR: δ = 1.60 and 2.00 (m, 4 H),
2.84 (m, 1 H), 3.82 (s, 3 H), 5.00 (m, 2 H), 5.60 and 5.78 (m, 2 H),
5.93 and 6.03 (d, J = 8 Hz, 1 H), 6.83 and 6.99 (d, J = 8 Hz, 1 H),
7.2 (m, 4 H), 9.8 (m, 1 H) ppm. 13C NMR: δ = 27.72, 31.74, 50.53,
53.75, 57.06, 111, 00, 111,25, 116.01, 124.8–131.0, 137.65, 154.51,
179.66 ppm.
Methyl 4-(1-Carboxy-1-methylethyl)-3-diethylcarbamoyl-4H-pyri-
1
dine-1-carboxylate (37b): 90% yield (0.73 g), liquid. H NMR: δ =
1.12 (m, 12 H), 3.27 (t, J = 7 Hz, 2 H), 3.58 (t, J = 7 Hz, 2 H),
3.81 (s, 3 H), 5.00 (m, 1 H), 6.88 (m, 1 H), 7.13 (m, 1 H), 8.9 (s, 1
H) ppm. 13C NMR: δ = 13.23, 20.82, 22.09, 41.70, 41.86, 48.03,
53.89, 107.49, 113.89, 123.84, 126.14, 151.79, 170.84, 180.83 ppm.
MS: calcd. for C16H24N3O5 [M + NH3]+ 342; found 342.
Methyl 2-Carboxymethyl-2H-quinoline-1-carboxylate (51a): 90%
1
yield (0.61 g), white solid, m.p. 123 °C. H NMR: δ = 2.32 (d, J =
6.5 Hz, 2 H), 3.64 (s, 3 H), 5.30 (dt, J1 = J2 = 6.5 Hz, 1 H), 5.96
(dd, J1 = 6.5 Hz, J2 = 9.2 Hz, 1 H), 6.35 (d, J = 9.2 Hz, 1 H), 6.9–
7.9 (m, 4 H), 11.00 (s, 1 H) ppm. 13C NMR: δ = 37.65, 49.05, 53.18,
111.94, 121.37, 124.5–133.6, 154.51, 176.04 ppm. MS: calcd. for
C13H17N2O4 [M + NH3]+ 265; found 265.
Methyl 4-(1-Carboxycyclohexyl)-3-formyl-4H-pyridine-1-carboxyl-
1
ate (38c): 50% yield (0.37 g), yellow solid, m.p. 160 °C. H NMR:
δ = 0.9–1.9 (m, 10 H), 3.68 (d, J = 5 Hz, 1 H), 3.86 (s, 3 H), 5.19
(dd, J1 = 5 Hz, J2 = 8 Hz, 1 H), 6.93 (d, J = 8 Hz, 1 H), 7.74 (s, 1
H), 9.38 (s, 1 H), 11.0 (s, 1 H) ppm. 13C NMR: δ = 22.2–28.85,
37.38, 52.75, 53.53, 107.94, 119.11, 123.38, 152.87, 179.00,
189.78 ppm.
Methyl
2-(1-Carboxy-1-methylethyl)-2H-quinoline-1-carboxylate
1
(51b): 20% yield (0.14 g), white solid, m.p. 150 °C. H NMR: δ =
0.97 (s, 3 H), 1.17 (s, 3 H), 3.78 (s, 3 H), 5.43 (d, J = 7.5 Hz, 1 H),
6.00 (dd, J1 = J2 = 7.5 Hz, 1 H), 6.61 (d, J = 7.5 Hz, 1 H), 7.0–7.4
(m, 4 H), 11.00 (s, 1 H) ppm. 13C NMR: δ = 19.51, 22.10, 48.63,
53.35, 57.62, 124.6–136.2, 153.94, 182.02 ppm.
Methyl 2-Benzoyl-4-(1-carboxy-1-methylethyl)-4H-pyridine-1-car-
1
boxylate (40b): 30% yield (0.25 g), liquid. H NMR: δ = 1.16 (s, 6
3738
© 2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Eur. J. Org. Chem. 2005, 3724–3744