Methanoic methyl

Ester R—c f OR OR HCOOCH3 CH3COOCH3 methyl methanoate methyl ethanoate methyl formate methyl acetate... 

Methyl methanoate Methyl 2-methyl-propenoate Methyl propanoate Methoxypropane 2-Methylpentan-4-one Dichloromethane Octadeca-9-enoic acid Ethanedioic acid... 

In contrast to what was observed in the microwave spectrum of methanoic acid (formic acid, HCO2H) (Figure 5.20), where two forms of the acid (as a consequence of restricted rotation because of hydrogen bonding) could be seen, the microwave spectrum of methyl methanoate (methyl formate, HCO2CH3) contains no evidence for more than the one conformer shown in Figure 5.30. 

Figure 5.30. A representation of the structure of methyl methanoate (methyl formate, HCO2CH3) as determined by microwave spectroscopy.

From Figure 10.32 we can see how the structure of an ester is huilt up. However, it is more conventional to draw the condensed or full structural formulas of esters the other way round. Thus, ethyl ethanoate is usually written CH3COOC2H5 in chemical equations, for instance. Figure 10.33 shows the structures of some esters (propyl methanoate, methyl ethanoate and ethyl propanoate) written or drawn in this more usual format. 

C3H6O2 74.07854 1,3-Dioxolane Ethyl methanoate Methyl ethanoate Propanoic acid... 

When the methyl-phenyl-pyrazolone is heated with methyl iodide in methano-lie solution, it acts in the form (D), the — NH— group undergoing methy lation, with the formation of the hydriodide of 2,3-dimethyl- l-phenyl-5 Pyrazolone, or antipyrine (F), a drug used (either as the free base or as the... 

The reaction (which is essentially the direct aminolysis of esters with benzylamine) proceeds readily when R is methyl or ethyl. Esters of higher alcohols should preferably be subjected to a preliminary methano-lysis by treatment with sodium methoxide in methanol ... 

N-Amination of indazole affords a mixture of 60% (271) and 40% (272), which compares with the 55 45 ratio obtained in methylation (Section 4.04.2.1.3(viii)). A camphopyrazole derivative (a mixture of tautomers 275 and 276) when treated with hydroxylamine O-sulfonic acid yields exclusively the (4S,7i )-4,7-methano-2-amino-7,8,8-trimethyl-4,5,6,7-tetrahydro-2H-indazole (277) (79YZ699). 

Chloro-6-methyl-l,5-naphthyridine reacts readily with methano-lic methoxide (65°, 7 hr, 75% yield), but more vigorous conditions (180°, 2-7 hrs, 30-85% yield) were used for various aminations. The 4-chlorodiazanaphthalene reacted with a sec-alkylamine under less vigorous conditions (95%, 36 hr, 85% yield) and with ammonia-phenol (180°, 3 hr, 50% yield) gave the phenoxy derivative which was also alkylaminated (200°, 3 hr, 90% yield).The 3-bromo and 3-bromo-2-ethoxy derivatives of428 were aminated with copper sulfate and concentrated ammonia (170°, 40 hr, 75% yield). 

Chemical Name 0-(1,4-Methano-1,2,3,4-tetrahydro-6-naphthyl)-N-methyl-N-(m-tolyl)-thiocarbamate... 

Treatment of 2- 5//-dibenz[i>,/]azepin-5-yl acetaldehyde (16), prepared in 68% yield by /V-alkylation of 5/7-dibenz[A,/]azepine with bromoacetaldehyde diethyl acetal followed by acid hydrolysis, with methyl hydroxylamine yields the isolable nitrone 17, which in refluxing toluene undergoes intramolecular 1,3-dipolar cycloaddition at the CIO —Cl 1 alkene bond to give 2,3,3a, 12b-tetrahydro-2-methyl-3,8-methano-8//-dibenz[i>,/]isoxazolo[4,5-r/]azepine (18).235... 

Fig. 8. Projections along the c axis of details of the structures of 8 and 2 with ethano and methano syn bridges (cross-hatched rectangle), respectively. The differing proximity of the syn bridge to the methyl substituents (cross-hatched triangles) on the flanking anti walls of the canal are apparent81...

Figure 10.10 Total ion current chromatogram obtained for sample 1998 after acid methano lysis and trimethylsilylation. Dx, methyl ester of diacid with x carbon atoms. Ex y, methyl ester of acid with x carbon atoms and y double bonds...

Synthesis of polydeuteriated 9 (O)-methano-A619,t-prostaglandin l-i methyl esters... 

Synthesis of di-tritiated 9-(0)-methano-A6<9a)-prostaglandin /7 methyl esters... 

In the reaction of fused aziridines with alkene dipolarophiles, the opportunity for stereoselectivity as well as facial selectivity arises since exo- or entfo-isomers can be formed (Scheme 10). In practice, maleic anhydride 6, A-methyl maleimide and JV-phenyl maleimide each reacted exo-stereoselectively with TV-benzyl aziridine 69 to form adducts of type 71 (Scheme 10b), the stereochemistries of which were confirmed by NOE measurement between Hb and He. Similar reaction of the Y-phenyl aziridine 67 with N-Ph maleimide gave a 1 1 mixture of endo-adduct 72 and exo-adduct 73 (Scheme 10c). Adducts 68, 71-73 all exhibited a low-field methano-bridge proton (Ha) in the range 5 3.06-3.60 confirming the syn-facial stereochemistry of the two bridges. 

Butyl mercaptans, b470, b471 m394, m395, m396 Butyl methanoate, b559 Butyl methyl ketone, d572... 

Methyl alcohol oxidizes to produce methanoic (formic) acid and water according to the following reaction and structural diagram ... 

The next stage is hydrolysis to Diclofop-methyl in the extract to diclofop. This is achieved by heating the residue obtained by removal of hexane with methanoic potassium hydroxide at 60°C, then acidification and extraction... 

A case of a thermally induced phase change involving ring inversion was recently described by Kaftory (31). He found that a crystal of the exo isomer of the adduct, 7a, of ll-cyano-l,6-methano[10]annulene with 4-methyl-1,2,4-triazoline-3,5-dione is transformed to the endo isomer 7b on heating to 175°C. The process involves nucleation and growth of the product phase, but maintains... 

Synonyms AI3-00408 BRN 1734623 Caswell No. 570 CCRIS 6062 EINECS 203-481-7 EPA pesticide chemical code 053701 Formic acid, methyl ester Methanoic acid, methyl ester Methyl methanoate UN 1243. 

Methacrylic acid, methyl ester, see Methyl methacrylate Methaldehyde, see Formaldehyde Methanal, see Formaldehyde Methanamine, see Methylamine Methanecarbonitrile, see Acetonitrile Methanecarboxylic acid, see Acetic acid Methane dichloride, see Methylene chloride Methane tetrachloride, see Carbon tetrachloride Methanethiol, see Methyl mercaptan Methane trichloride, see Chloroform 6,9-Methano-2,4,3-benzodioxathiepin, see Endosnlfan sulfate... 

Methanoic acid, see Formic acid Methanoic acid, methyl ester, see Methyl formate Methenyl chloride, see Chloroform Methenyl tribromide, see Bromoform... 

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