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[1] To the east, the Bucegi Mountains have a very steep slope towards the popular tourist destinations in the Prahova Valley, such as Bușteni and Sinaia. At a higher elevation is the Bucegi Plateau, where wind and rain have turned the rocks into spectacular figures such as the Sphinx and Babele.
Cyclohexa-1,3-diene itself is rare in nature, but the cyclohexa-1,3-diene motif is fairly common. [8] One example is chorismic acid, an intermediate in the shikimic acid pathway. Of the several examples of the terpenoids and terpenes, a prominent example is phellandrene. An unusual derivative is cis-1,2-dihydrocatechol.
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2,3-pentadiene, H 3 C−CH=C=CH−CH 3, with two enantiomers (R and S). [5] It and 1,2-pentadiene are the least common isomers of pentadiene. Well known derivatives containing pentadiene groups include hexadienes , cyclopentadiene , and especially three fatty acids linoleic acid , α- linolenic acid , and arachidonic acid as well as their ...
1,5-Hexadiene is produced commercially by the ethenolysis of 1,5-cyclooctadiene: [1] (CH 2 CH=CHCH 2) 2 + 2 CH 2 =CH 2 → 2 (CH 2) 2 CH=CH 2. The catalyst is derived from Re 2 O 7 on alumina. A laboratory-scale preparation involves reductive coupling of allyl chloride using magnesium: [2] 2 ClCH 2 CH=CH 2 + Mg → (CH 2) 2 (CH=CH 2) 2 + MgCl 2
1,2-Dichloroethylene or 1,2-DCE is the name for a pair of organochlorine compounds with the molecular formula C 2 H 2 Cl 2. The two compounds are isomers, each being colorless liquids with a sweet odor. It can exist as either of two geometric isomers, cis-1,2-dichloroethene or trans-1,2-dichloroethene, but is often used as a mixture of the two ...
2-Hexyne can be semihydrogenated to yield 2-hexene or fully hydrogenated to hexane. [3] With appropriate noble metal catalysts it can selectively form cis-2-hexene. [4] 2-Hexyne can act as a ligand on gold atoms. [5] With strong sulfuric acid, the ketone 2-hexanone is produced. However this reaction also causes polymerization and charring. [6]
The Bucegi Natural Park with an area of 32.663 ha [3] was declared a protected area by Law Number 5 of March 6, 2000 (published in Monitorul Oficial Number 152 of April 12, 2000) [4] and represents a mountainous area (caves, pit caves, canyons, ridges, sinkholes, valleys, waterfalls, pastures and forests), that shelters a variety of flora and fauna.