Detail of "1000-86-8"

Reference

Ether cleavage with magnesium

Ether cleavage with magnesium. III. Criteria for the cleavability of thio ethers. Maercker, Adalbert; Jaroschek, Hans J. (Inst. Org. Chem., Univ. Erlangen-Nuernberg, Erlangen, Ger.). J. Organomet. Chem., 116(1), 21-37 (German) 1976. CODEN: JORCAI. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Only 7 out of 25 thio ethers investigated were attacked by Mg in boiling THF. A thiophenyl group in combination with an sp2 C atom in the .beta.-position on the other side of the S atom appears necessary for cleavability. Allyl Me sulfide, in contrast to allyl Me ether, is not cleaved. The clevable thio ethers, on the other hand, react faster than the corresponding O ethers. The selective cleavability of the thio ethers is attributed to the S atom, while partially pos. by resonance with the phenyl ring attracting electrons interacting with the .alpha.,.beta.- or . 1000-86-8 and 702-00-1 are also in the experiment.beta.,.gamma.,.pi. electron systems, resp. The rate-detg. step of the reaction is the electron transfer from the Mg to the thio ether, followed by detachment of the unsatd. group from the S, presumably as a radical. The stability of the final organomagnesium compd., therefore has no influence on the cleavability of the thio ethers. .

Synthesis and characterization of (cyclopentadienyl)(2,4-dimethylpentadienyl)cobalt(III) fluoroborate and of the dimeric product resulting from its reduction

Synthesis and characterization of (cyclopentadienyl)(2,4-dimethylpentadienyl)cobalt(III) fluoroborate and of the dimeric product resulting from its reduction. Ernst, Richard D.; Ma, Huairang; Sergeson, Gertrud; Zahn, Thomas; Ziegler, Manfred L. (Dep. Chem., Univ. Utah, Salt Lake City, UT 84112, USA). Organometallics, 6(4), 848-53 (English) 1987. CODEN: ORGND7. ISSN: 0276-7333. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 75 The solid-state structure of the half-open cobalticinium complex Co(C5H5)(2,4-C7H11)+ BF4- (I, C7H11 = dimethylpentadienyl), prepd. by hydride abstraction from Co(C5H5)(h4-2,4-dimethyl-1,3-pentadiene), was studied. An x-ray structural study revealed an eclipsed orientation of the two org. 106212-37-7 and 1000-86-8 are cas registry numbers of chemicals which are used as reagents here. ligands in I. Redn. of I with sodium amalgam leads to a dimeric compd., (m-h4,h4-2,4,7,9-Me4-1,3,7,9-C10H10)[Co(C5H5)]2 (II; C10H10 = decatetraene), the crystal structure of which was detd. Unlike the product formed from the dimerization of Co(2,4-C7H11)2, which contained a 2,4,6,8-decatetraene, this species did not undergo an isomerization. That isomerization occurs only when an unaltered 2,4-dimethylpentadienyl ligand is present on the Co atom clearly implicates an h5-h3 pentadienyl transformation in the decatetraene isomerization process obsd. for the open cobaltocene dimer. .