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Syringic aldehyde

Santalum album L. S. myrtifolium Roxb. S. verum L. Tan Xian (Sandalwood) (heartwood) Alpha-santalol, beta-santalol, alpha-santalene, beta-santalene, santene, alpha-santenone, alpha-santenol, santalone, santalic acid, teresantalic, isovaleraldehyde, teresantalol, tricycloekasantal, santalin, deoxysantalin, sinapyl aldehyde, caniferyl aldehyde, syringic aldehyde.33 Treat stomachache. [Pg.145]

Syringic aldehyde is much more soluble in chloroform than in ether. Extraction is essentially complete since a fourth extraction gave only a 0.3-0.7% increase in yield. [Pg.94]

This represents a large excess of sodium bisulfite, but smaller amounts remove a smaller percentage of the syringic aldehyde from the chloroform solution. When larger amounts of bisulfite are employed, extraction of the product is still incomplete. [Pg.95]

This procedure is a modification of the method described by Manske and coworkers.4 Syringic aldehyde has also been obtained by numerous other procedures from pyrogallol-1,3-dimethyl ether M.v,a and from gallic acid.9 1CU1... [Pg.95]

Figure 3.1 Structures of principal low molecular weight phenols in wine (1) pyrocatechol (2) resorcinol (3) hydroquinone (4) phloroglucinol (5) vanillin (6) p-hydroxybenzaldehyde (7) syringic aldehyde (8) coniferyl aldehyde (9) sinap-inaidehyde (10) gentisic acid (11) gallic acid (12) vanillic acid (13) salicylic acid (14) syringic acid (15) caffeic acid (16) ferulic acid (17) p-coumaric acid (18) hydrox-ycinnamoyltartaric acids (R = H, OH, OCH3)... Figure 3.1 Structures of principal low molecular weight phenols in wine (1) pyrocatechol (2) resorcinol (3) hydroquinone (4) phloroglucinol (5) vanillin (6) p-hydroxybenzaldehyde (7) syringic aldehyde (8) coniferyl aldehyde (9) sinap-inaidehyde (10) gentisic acid (11) gallic acid (12) vanillic acid (13) salicylic acid (14) syringic acid (15) caffeic acid (16) ferulic acid (17) p-coumaric acid (18) hydrox-ycinnamoyltartaric acids (R = H, OH, OCH3)...
Duff heated glycerol with boric acid at 170° until no more water was eliminated) added 25 g. each of a phenol and hexamine, heated at 170° for 15 min., and isolated the chelated o-hydroxy aldehyde by steam distillation. For several phenols, yields were in the range 2-8.5 g. Pyrogallol-1,3-dimethyl ether is substituted in the para position to give syringic aldehyde (I) in 31-32% yield. W. Baker applied to... [Pg.218]

Sulfur trioxide-Dioxane, 1126-1127 Sulfiir trioxide-Pyridine, 1127-1128 Sulfur trioxide-Trimethylamine, 1128 Sulfuryl chloride, 196,1106,1128-1131 Swamping catalyst effect, 32,33 Synthesis gas, 224 Syringic aldehyde, 430,1047... [Pg.727]

Aldehydes. Conversion to solid sodium bisulfite addition product with excess reagent, removal of nonaldehydic material by washing with alcohol or ether, and regeneration usually with acid, base, or sodium carbonate, provides a convenient method of purification. Examples syringic aldehyde, n-hexaldehyde. ... [Pg.1257]

According to one Indian manufacturer 3,5-dimethoxy p-cresol is initially oxidized to 3,5-dimethoxy-4-hydroxy-benzaldehyde (syringe aldehyde) which is then methylated to 3,4,5-TMBA... [Pg.82]

USE Source of vanillin, syringic aldehyde, dimethyl sulfoxide. Extender for phenolic plastics, to strengthen rubber (esp for shoe soles), as oil mud additive, to stabilize asphalt emulsions, to precipitate proteins. [Pg.864]

See other pages where Syringic aldehyde is mentioned: [Pg.397]    [Pg.486]    [Pg.397]    [Pg.92]    [Pg.93]    [Pg.93]    [Pg.95]    [Pg.88]    [Pg.82]    [Pg.188]    [Pg.47]    [Pg.111]    [Pg.111]    [Pg.112]    [Pg.1425]    [Pg.496]    [Pg.873]    [Pg.10]    [Pg.923]    [Pg.1054]   
See also in sourсe #XX -- [ Pg.473 ]

See also in sourсe #XX -- [ Pg.11 , Pg.93 ]

See also in sourсe #XX -- [ Pg.31 , Pg.93 ]



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