Detail of "2258-42-6"
- CAS Number:
- 2258-42-6
- Name:
Formyl acetate
- Molecular Structure:
- Formula:
- C3H4O3
- Molecular Weight:
- 88.06
- Synonyms:
- Acetic acid, anhydride with formic acid;Acetic formic anhydride;methanone, (acetyloxy)-;
- Density:
- 1.116 g/cm3
- Boiling Point:
- 102.6 °C at 760 mmHg
- Flash Point:
- 31 °C
Formyl acetate
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Reference
- Isocyanomethyl-polystyrene resin
- Isocyanomethyl-polystyrene resin. Skorna, Giselher; Stemmer, Rupert; Ugi, Ivar (Org.-Chem. Inst., Tech. Univ. Muenchen, Munich, Ger.). Chem. Ber., 111(2), 806-10 (German) 1978. CODEN: CHBEAM. ISSN: 0009-2940. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) Isocyanomethylated polystyrene is prepd. by reaction of polystyrene with N-(chloromethyl)phthalimide, quant. dephthalylation of the phthalimidomethyl deriv. with MeNH2 [74-89-5], formylation of the aminomethyl group with HCO2Ac [2258-42-6], and reaction with COCl2 [75-44-5] or diphosgene [503-38-8] in CH2Cl2 in the presence of base (isocyanide yield 5-15% and 0-12%, resp.) or by 2-phase aq. phosgenation (isocyanide yield and content 54% and 3.36 mequiv./g resin, resp.).
- Substituted cephalosporins as antiinflammatory and antidegenerative agents
- Substituted cephalosporins as antiinflammatory and antidegenerative agents. Doherty, James B.; Finke, Paul E.; Firestone, Raymond A.; Shah, Shrenik S.; Thompson, Kevan R. (Merck and Co., Inc. , USA). U.S. US 4637999 A 20 Jan 1987, 18 pp. (United States of America) CODEN: USXXAM. CLASS: ICM: C07D501-20. ICS: A61K031-545. NCL: 514201000. APPLICATION: US 83-490617 2 May 1983. DOCUMENT TYPE: Patent CA Section: 26 (Biomolecules and Their Synthetic Analogs) Section cross-reference(s): 1 Title compds. I [M = CF3, Cl, F, CO2H, CHO, tosyloxy. (un)substituted Me; R1 = H, OR2 [R2 = allyl, Ph, phenylallyl, COR (R = H, allyl, Ph, PhCH2 alkylamino)], alkyl, Ph, phenylalkyl, halo; B = OB1, NB2B3; B1; B1, B2 = (un)substituted allyl, Ph, cycloaklyl, alkenyl, phenylalkyl, etc.; B3 = B1, H; Q = H, alkyl, haloalkyl, PhCH:, PhCH2 alkoxy, phenylaminoslkyl etc.; X = Cl, F, H], useful as potent elastase inhibitors and thus as antiinflammatory and antidegenerative agents (no data), were prepd. 7-ACA tert-Bu ester in CH2Cl2 was diazotized with NaNO2 and 2N aq. H2SO4 to give a soln. of tert-Bu 3-acetyloxymethyl-7-diazo-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2- carboxylate which, in MeOH, reacted with Rh(II) acetate dimer to give 41.4% tert-Bu 3-acetyloxypenthyl-7a-methoxy-8-oxo-5-thia-1-azabicycle[4.2.0]oct-2-e ne-2-carboxylate (II). 2258-42-6 is just another one chemical used in this study. In tests for inhibition of the proteolytic function of human granulocyte elastase, the ED50 of II was 3.5 mg/mL. .