2- Dodecenal

As shown in Scheme 8.2, increasing the temperatnre to 50°C resulted in the selective formation of (ii)-2-aIkenes. While the formation of 1-dodecene was observed within minntes, isomerisation to 2-dodecene is slow, accounting for the timescale of hours required for reaction. 

The main component of coriander oil is (+)-linalool (60-80%) [452-460c]. Mono- and polyunsaturated fatty aldehydes, although minor components, contribute to the characteristic aroma of the oil because of their powerful odor. In contrast to the seed oil, coriander leaf oil contains these aldehydes as main constituents, e.g. 2-decenal and 2-dodecenal. 

Hexenal (leaf aldehyde) is a constituent responsible for the smell of green leafs, ( )-2-octenal a main component of the aroma of raw potatoes ( )-2-nonenal is the organoleptic main constituent of the smell of cucumbers and is found in carot root oil, tomatoes, beef and raspberries 158). ( )-2-Decenal and ( )-2-dodecenal are components of some essential oils, ( )-2-tridecenal is responsible for the bug-like smell of coriander seed oil1S8). 

Disodium Phosphate, 53 Disodium Pyrophosphate, 52 8-Dodecalactone, 70 (E)-2-Dodecen-l-al, 70... 

Contrary to all literature rqxjrts major constituent reported here for the first time is trans-2-decenal, the content of which is relatively constant from living leaf to picked to commercial herb oil. TWo other alpha, beta unsaturated aldehydes, trans-2-dodecenal and trans-2-tetradecenal, both reported also for the first time, are present in appreciable quantities in both the living and dri leaf and at lower levels in the oil. A large nunher of related aldehydes and alcohols, both saturated and unsaturated, many reported for the... 

DODECENAL see DXU280 DODECENE EPOXIDE see DXU400 DODECENYLSUCCINIC ANHYDRIDE see DXVOOO DODECOIC ACID see LBLOOO... 

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