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24424-99-5 - Di-tert-butyl dicarbonate, 97+% - Boc anhydride - Di-tert-butyl pyrocarbonate - A14708 - Alfa Aesar

A14708 Di-tert-butyl dicarbonate, 97+%

Codice CAS
Boc anhydride
Di-tert-butyl pyrocarbonate

Dimensioni Prezzo ($) Quantità Disponibilità
25g 37,80
100g 116,00
500g 444,00
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Di-tert-butyl dicarbonate, 97+%


Proprietà chimiche

Peso formula
Punto di fusione
Punto di ebollizione
Punto di infiammabilità
Indice di rifrazione
Moisture Sensitive
Miscible with decalin, toluene, carbon tetrachloride, tetrahydrofuran, dioxane, alcohols, acetone, acetonitrile and dimethylformamide. Immiscible with water.


Reagent for the introduction of the Boc protecting group.Di-tert-butyl dicarbonate is a reagent used for the introduction of BOC protecting group. It plays an important role in the preparation of 6-acetyl-1,2,3,4-tetrahydropyridine by reacting with 2-piperidone. It serves as a protecting group used in solid phase peptide synthesis.


Store in a cool place. Keep the container tightly closed in a dry and well-ventilated place. Moisture and light sensitive. Incompatible with oxidizing agents, reducing agents, bases and acids.


Reagent for amino group protection as the tert-butyl carbamate (tert-butoxycarbonyl, Boc derivatives), in high yield under mild conditions, widely used in peptide chemistry; see Appendix 6. For practical details, literature references and tabulated results, see: Org. Synth. Coll., 7, 70 (1990). For further examples see: Synthesis, 223 (1987): Org. Synth. Coll., 9, 124, 300 (1998). Benzyl carbamates (Cbz, Z) may be transformed into Boc in a one pot procedure catalyzed by Pd/C: Tetrahedron Lett., 33, 3167 (1992).

Rapid and efficient formation of Boc derivatives of amines, catayzed by Copper(II)­ tetrafluoroborate hexahydrate, 26127 has been described: Tetrahdron Lett., 47, 1087 (2006).

For Boc protection of phenols, alcohols, thiols etc. under phase-transfer conditions, see: Can. J. Chem., 63, 153 (1985).

Amides can be protected in the presence of a catalytic quantity of DMAP ( 4-(Dimethyl­amino)­pyridine, A13016 ): J. Org. Chem., 48, 2424 (1983); Acta Chem. Scand. B, 40, 745 (1986); the amide link of the product undergoes facile alkaline hydrolysis or methanolysis. The nitrogen function of indoles and pyrroles can also be protected under similar conditions: J. Chem. Soc., Chem. Commun., 1699 (1984); Org. Synth. Coll., 9, 121 (1998). 1-Boc indoles may be synthesized from N-Boc 2-alkylanilines: Synthesis, 871 (1991).

The Boc group is readily cleaved with acid, most often Trifluoroacetic acid, L06374 .

In the presence of 1 equivalent of DMAP in acetonitrile, arylamines are converted to isocyanates, generally in high yield; the dicarbonate here behaves as a convenient phosgene replacement: Angew. Chem. Int. Ed., 34, 2497 (1995). The same reagent system has also been applied to nitroalkanes for the ambient temperature generation of nitrile oxides which were trapped in situ with dipolarophiles: Synthesis, 309 (1997). Carboxylic acids can be esterified in the presence of a catalytic amount of DMAP: Synlett, 263 (2004).

Carboxylic acids have also been converted to Boc-protected amines, via a one-pot Curtius rearrangement, using the reagent in the presence of sodium azide, with catalytic amounts of TBAB and zinc triflate: Org. Lett., 7, 4107 (2005).

For a brief feature on uses of the reagent in synthesis, see: Synlett, 1995 (2001).

Hong, X.; Wang, H.; Liu, B.; Xu, B. Ruthenium-catalyzed double-fold C-H tertiary alkoxycarbonylation of arenes using di-tert-butyl dicarbonate. Chem. Commun. 2014, 50 (91), 14129-14132.

Sweis, R. F.; Wang, Z.; Algire, M.; Arrowsmith, C. H.; Brown, P. J.; Chiang, G. G.; Guo, J.; Jakob, C. G.; Kennedy, S.; Li, F.; Maag, D.; Shaw, B.; Soni, N. B.; Vedadi, M.; Pappano, W. N. The Discovery of A-893, A New Cell-Active Benzoxazinone Inhibitor of Lysine Methyltransferase SMYD2. ACS Med. Chem. Lett. 2015, 6 (6), 695-700.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H228-H330-H315-H318-H317-H335

Flammable solid. Fatal if inhaled. Causes skin irritation. Causes serious eye damage. May cause an allergic skin reaction. May cause respiratory irritation.

Dichiarazioni precauzionali: P260u-P201-P280-P303+P361+P353-P305+P351+P338-P301+P330+P331-P304+P340-P310a-P405-P501a

Obtain special instructions before use. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Classe di rischio
Gruppo di imballaggio
Codice tariffe armonizzato


  • A10807

    1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 98+%
  • A10973

    N,N'-Dicyclohexylcarbodiimide, 99%
  • A12646

    Triethylamine, 99%
  • A13016

    4-(Dimethylamino)pyridine, 99%
  • L06374

    Trifluoroacetic acid, 99%

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