Dimethy ether

Blumea balsumifera (L.) DC var. microcephala Kitumura Ai Na Xian (Blumea camphor) (leaf, shoot) Essential oils, borneol, camphor, cineole, limonene, palmitic acid, myristic acid, sesquiterpene alcohol, dimethy ether, cineole, limonene, pyrocatechic tannins.48 53 Treat itch, sores, wounds. A stomachic, sudorific, tonic, diaphoretic, anticatarrhal. 

CzHfiAlO] AI[CH30CH3] Matrix isolation / vapor deposition reaction of Al with dimethy ether / adamantane matrix complex formation 2.0004 90Chel... 

Methylal (Formaldehyde dimeth acetal, dimethoxymethane, methane dimethi ether)... 

A solution of 0.7 g of 2-(2-amino-N-methylacetamido)-5-chlorobenzophenone in 10 ml of a 50% solution (by weight) of diketene in acetone is refluxed for 3 hours and then evaporated to give a brown oil. The oil Is chromatographed on 200 g of silica gel using a 1 1 (by volume) mixture of ethyl acetate cyclohexane 25 ml fractions are collected. Fractions 11-14 are combined, mixed with chloroform, evaporated and triturated with ether to give 0.337 g of 11-chloro-8,12b-dihydro-2,8-dimethy 1-12b-phenyl-4H-[ 1,3]oxazino[3,2-dl [1,4] benzodiazepine-4,7 (6H)-dione as a pale yellow solid, MP 174°C to 176°C. 

When we allowed pentafluorophenyl-lithium to decompose in ether in the presence of an excess of N, ZV-dimethy laniline we obtained the compounds (92) 70, X = F), (94), the latter as the major compound, and a product which was shown to be (97). That this latter compound did not arise by metallation of 2V,lV-dimethylaniline followed by addition to tetrafluorobenzyne was shown by quenching the reaction mixture with deuterium oxide. No deuterium incorporation was detected. The compound (97) provides a rare example of a product derived by a Stevens rearrangement in which aryl migration has occurred b>. 

Reaction of 1 with 4-fluorobenzoyl chloride yielded the difluoro-containing monomer 2, which is readily polymerized with a bisphenol using potassium carbonate in /V, /V-dimethy 1 acetamide to yield poly(ether ketone)s. The five poly-(ether ketone)s prepared were soluble in polar aprotic solvents and were cast into flexible, creasable films showing good thermal stability. We have demonstrated that 1 -phenoxy-substituted naphthalene moieties undergo a Friedel-Crafts acyla-... 

HjC QH NaWN-CN QH CH ), mw 279.34, N 25-07/5 red ndls (from ligroin) mp 77°, explodes mildly on rapid heating or on contact with coned sulfuric acid, decompg into Na and 2-[ 2,4-dim erhyl-phenyll-4,6-dimethy 1-benztriazole readily sol in eth, more diffc sol in cold ale. It was prepd by the action of alcoholic NHj on the dry diazo-perbromide, Cl6Hi7N4Brs, obtd as described in Ref 2, in the presence of excess ether Refs l)Beil 16, 74 2)T.Zincke H. Jaenke, Ber 21, 542(1888) JCS 54 I, 469-70(1888)... 

A solution of 14 g indol-3-yl-N,N-dimethylglyoxylamide in 350 mL anhydrous THF was added, slowly, to 19 g LAH in 350 mL THF which was well-stirred and held at reflux temperature under an inert atmosphere. After the addition was complete, reflux was maintained for an additional 16 h, the reaction mixture cooled, and the excess hydride destroyed by the cautious addition of wet dioxane. The formed solids were removed by filtration, washed with hot THF, the filtrate and washings combined, dried over anhydrous MgSC>4, and the solvent removed under vacuum. The residue was dissolved in hot petroleum ether. On cooling, crystals of N,N-dimethy ltryptamine (DMT) were formed, filtered free of solvent, and air dried, weighing 11.1 g (91%). There have been reports of byproducts from this LAH procedure when performed in Et20 that can compromise the purity of the final product. To obtain the HC1 salt of DMT, the residue was dissolved in anhydrous... 

A mixture consisting of 200 ml methyl alcohol, 1680 ml 40% aqueous dimethy-lamine solution, dimethyl ami nc HCl (303 g), and 200 g potassium cyanide (200 g) was added to l,4-dioxaspiro[4.5]decan-8-one (200 g), then stirred 65hours. A white suspension that formed was extracted four times with 800 ml diethyl ether, then concentrated, and the residue dissolved in 500 ml CH2C12. The organic phase was isolated, dried using Na2S04, then concentrated, and 265 g product isolated as a white solid. 

In a typical experiment, a solution of 4-formyl-2,2-dimethy-l//-1,5-benzodiazepine (0.036 mol) in THF (300 mL) was added in small portions to a solution of potassium permanganate (0.063 mol) in water (100 mL) over a period of 3.5 h. (Addition of solid KMn04 to neat THF could produce an explosive mixture, and should therefore be avoided) During the addition, the mixttue was allowed to warm to about 40 C. The mixture was then filtered to remove manganese dioxide and the filtrate was concentrated and extracted with diethyl ether. After drying, the extract was concentrated and the resulting product crystallized from diisopropyl ether. The overall yield was 7 g (79%). 

Occasionally expins have been reported during evapn of ethereal solns of AlHj or related compds used as reducing agents in organic rc ctiOMS On one occnsicn 2. violent expln occurred when the residue obtained on evapn of a dimethy 1 cellulosolve soln of AIH3 contaminated with AlCl, was warmed, but no explns took place when AlH free of AlClj was used (Ref 2)... 

The combined action of carbon tetrachloride, trioctylphosphine and A/, N-dimethy]ani-line on Af-(hydroxymethyl)pyrrole in ether gives the salt 70 via unstable l-(chlor-omethyl)pyrrole (69). Addition of the morpholine enamines of cyclic ketones of ring size six, seven or eight to the salt affords mixtures of tricyclic derivatives 72 and 73 of pyrrole, which are thought to be formed via 5-azoniafulvene chloride 71 (equation 34) . ... 

Root extracts of the American coneflower, Echinacea augustifolia DC., also exhibited juvenoid activity [114] ether extracts showed high morphogenic activity on T. molitor pupae but none was observed on fifth instar nymphs of O. fasciatus (500 ig of extract). The active principle in the oil was identified as ( )-10-hydroxy-4,10-dimethy 1-4,11-dodecadien-2-one or echinolone (Fig. (6)) [109]. However, chemically synthesized echinolone was not active in the standard T. molitor pupal bioassay [115]. The authors of this report acknowledge that this may be due to a failure to synthesize the proper compound. However, the spectral data is consistent with that reported. They were also unable to isolate echinolone from the roots of E. augustifolia. The chemical data for echinolone are summarized in Appendix III, Table 12 and the synthesis of racemic echinolone has been reported [115, 116]. 

Styroblend (BASF AG, Germany) PS/poly(2,6-dimethy 1-1,4-phenylene ether) and a compatibilizer Resistant to acid, alkah, oil and alcohol poor in gasoline... 

---