| 释义 |
cyclize, v. Org. Chem.|ˈsaɪklaɪz|
[f. cyclic a. 7 + -ize.]
trans. To make (a compound) cyclic (cyclic a. 7); intr. to undergo cyclization, become cyclic. So cycliˈzation, the rearrangement of the atoms in a molecule to form one or more ‘closed chains’ or rings: ˈcyclized ppl. a.
1909Chem. News 16 July 24/2 The cyclisation of ketone acids always occurs at one of the carbon atoms near the ketone function. Cyclic chains containing C5 and C6 are most easily formed. 1933Jrnl. Chem. Soc. ii. 1111 The cyclisation of aromatic compounds in which a cyclic system forms part of an unsaturated side chain. 1934Webster, Cyclize v.t. 1936Nature 7 Mar. 411/2 Open ‘cyclised’ polypeptides. 1942G. Egloff et al. Isomerization of Pure Hydrocarbons vi. 170 1,1,3,3-Tetraphenylbutene cyclized at 215° in the presence of ‘Floridin’. Ibid. vi. 171 The other form, when treated in the same manner, cyclized into 1-benzyl-2, 3-diphenylindane. 1949H. W. Florey et al. Antibiotics II. xxviii. 958 Attempts to cyclize this compound. 1954Archit. Rev. CXV. 356/1 Cyclized (or isomerized) rubber is mostly used for paints which are required to withstand steam and condensation and is thus most commonly used in kitchens and bathrooms. 1967M. E. Hale Biol. Lichens viii. 117 A similar pathway, but with reduction instead of cyclization, could explain the synthesis of fatty acids. |