Soluble Polymer-Supported Synthesis of α-Amino Acid Derivatives

One-Pot Synthesis of 1,4-Disubstituted Pyrazoles from Arylglycines via Copper-Catalyzed Sydnone–Alkyne Cycloaddition Reaction

“…1, 151.3, 126.2 (2C), 125.3 (q, J = 267 Hz), 115.8 (q, J = 32 Hz), 111.6 (2C), 44.1; IR (KBr, cm −1 ) 3421, 2899,1901,1731,1616,1585,1538,1491,1441,1412,1319,1281,1242,1188,1164,1151,1110,1062,1005,926,825 2865,1915,1802,1725,1588,1570,1512,1494,1477,1435,1386,1343,1320,1304,1263,1234,1173,1146,1086,1063,1005,983,961,912,870,859,845 2-(Naphthalen-1-ylamino)acetic Acid (1j). 15 To a solution of 1naphthalenamine (286 mg, 2.00 mmol) in MeOH (25 mL) at 0 °C were added NaOAc (328 mg, 4.00 mmol), glacial acetic acid (0.46 mL, 8.00 mmol), glyoxylic acid monohydrate (276 mg, 3.00 mmol), and NaBH 3 CN (126 mg, 2.00 mmol). The solution was warmed slowly to rt over 2 h. The mixture was filtered through a plug of Celite and washed with a solution of 1% acetic acid in EtOAc.…”

Reaction of Methyl Diazoacetate with Amines Catalyzed by Ru2(OAc)4Cl

“…The physical constants and spectral parameters of compounds IIa, IIb, IId-IIf, and IIh-IIj coincided with those reported in [21][22][23][24][25][26][27]. 4 Cl in 3 ml of benzene, heated to 75°C, and the mixture was stirred for 20 h, the progress of the reaction being monitored by TLC.…”