(3-FORMYL-PHENYL)-CARBAMIC ACID TERT-BUTYL ESTER Chemical Properties

Melting point:

88℃

Boiling point:

291℃

Density 

1.163

Flash point:

130℃

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

form 

solid

pka

13.50±0.70(Predicted)

color 

Beige

Safety Information

RIDADR 

UN2811

HS Code 

2913000090

(3-FORMYL-PHENYL)-CARBAMIC ACID TERT-BUTYL ESTER Usage And Synthesis

Synthesis

General procedure for the synthesis of tert-butyl (3-formylphenyl)-carbamate from tert-butyl (3-(hydroxymethyl)phenyl)carbamate: activated manganese dioxide (7.8 g, 90 mmol) was added to a solution of dichloromethane (50 mL) containing 3-(tert-butoxycarbonylamino)-benzyl alcohol (2.0 g, 9.0 mmol). The resulting suspension was stirred and reacted at room temperature for 16 hours. Upon completion of the reaction, the mixture was filtered through a diatomaceous earth pad and the filtrate was concentrated under reduced pressure to give 1.7 g (85% yield) of the target product. The product was characterized by 1H NMR (400 MHz, CDCl3): δ 9.97 (s, 1H), 7.92 (t, J = 1.8 Hz, 1H), 7.63 (dd, J = 8.0,1.1 Hz, 1H), 7.55 (ddd, J = 7.6,1.4,1.1 Hz, 1H), 7.44 (t, J = 7.6 Hz, 1H), and 1.53 (s, 9H).

References

[1] Chemistry - A European Journal, 2016, vol. 22, # 26, p. 8814 - 8822
[2] Angewandte Chemie - International Edition, 2017, vol. 56, # 49, p. 15746 - 15750
[3] Angew. Chem., 2017, vol. 129, p. 15952 - 15957,6
[4] Patent: WO2018/114965, 2018, A1. Location in patent: Page/Page column 27
[5] Chemistry of Materials, 2011, vol. 23, # 21, p. 4844 - 4856

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