Halogenated acetylenes

Straight acetylene can be used as an explosive when in liquefied or solidified form (see Acetylene as an Explosive) (See also Acetylene Condensation or Polymerization Products, Acetylene Derivatives, Acetylene Hydroperoxides Peroxides, Acetylene-Nitric Acid Reactions, Acetylene Reactions, Acetylenic Compounds, Acetylides, Cuprene and Halogenated Acetylenes)... 

Trinitroacetylenediurein, C4HjNTOfl and Tetranitroacetylenediurein, C4HjNbOi0—were not found in Beil or CA through 1956 Acetylene, Halogenated. See Halogenated Acetylenes... 

See Halogenated Acetylenes under H s Iron Acetylide (Ferrous Acetylide) [Eisen (II)-acetylenid, in Ger], FeCjj solid, stable in the air or w at RT decompd by HCl with evoln of CjHa. Was prepd by Durand on treating CaCj with ferrous chloride Refs l)Beil 1,[220] 2)J.F. Durand, CR... 

Chloroethyne. See Chloroacetylene and under Halogenated Acetylenes for other salts... 

Acetylene Black. See under Carbon Blacks Acetylene Chloride or Chloroethyne See under Halogenated Acetylenes... 

Acetylene gas and the acetylide salts of heavy metals silver and copper acetyl-ides are extremely shock-sensitive. Polyacetylenes and some halogenated acetylenes. 

Although acetylenes are widely used in organic synthesis, and are present both in p armaceutica s and in interstellar space, simple halogenated acetylenes are virtually unknown in nature. 

See Halogenated Acetylenes under H s Iron Acetylide (Ferrous Acetylide) [Eisen... 

Other examples may be found among the mono- and di-halogenated acetylenes, such as diiodo- and dibromo-acetylene, CI2 = C and CBrj = C, which have more interesting physiopathological properties than the halogenated paraffin hydrocarbons. 

DICHLOROACETYLENE (7572-29-4) Unstable explosive when exposed to heat, air, or shock. Violent reaction with oxidizers and acids. A halogenated acetylene compound. 

Reactions of organolead-alkali metal compounds with halogenated acetylenes have seldom been used until now 281). 

Attempts to hydrocarboxylate diacetylenes have failed so far [369]. Different results are obtained in the conversion of halogenated acetylenes. Thus, a halogen atom bond to a C-atom of the triple bond is replaced by hydrogen ... 

Harrison, J.F. A Hirschfeld-I interpretation of the charge distribution, dipole and quadrupole moments of the halogenated acetylenes FCCH, CICCH BrCCH and ICCH. J. Chem. Phys. 133, 214103 (2010)... 

Extracts of A. dactylomela are rich in other organic metabolites as has been demonstrated earlier. Gopichand et al, 552) isolated four new halogenated acetylenic ethers (864-867) from the digestive glands. These ethers which are fatty acid derived were two isomeric pairs named (3 )-12-epiobtusenyne (864), 12-677/-obtusenyne (865), (S )- and (3Z)-dactomelyne (866 and 867), respectively. Another isomeric pair, E)-and (Z)-ocellenyne (868 and 869), has been obtained from Aplysia oculifera (559). No biological activity has been described for any of these compounds. 

Gopichand, Y., F.J. Schmitz, J. Shelly, A. Rahman, and D. van der Helm Marine Natural Products Halogenated Acetylenic Ethers from the Sea Hare Aplysia dactylomela. J. Org. Chem. 46, 5192 (1981). 

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