Detail of "866395-16-6"

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Gold(I)-Catalyzed Formation of 4-Alkylidene-1,3-dioxolan-2-ones from Propargylic tert-Butyl Carbonates

Some chemicals with cas registry numbers like 866395-16-6 are also used. Gold(I)-Catalyzed Formation of 4-Alkylidene-1,3-dioxolan-2-ones from Propargylic tert-Butyl Carbonates. Buzas, Andrea; Gagosz, Fabien (Laboratoire de Synthese Organique UMR 7652 CNRS, Ecole Polytechnique, Palaiseau 91128, Fr.). Organic Letters, 8(3), 515-518 (English) 2006 American Chemical Society. CODEN: ORLEF7. ISSN: 1523-7060. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) 4-Alkylidene-1,3-dioxolan-2-ones were prepd. via gold(I)-catalyzed rearrangement of propargylic tert-Bu carbonates in CH2Cl2 at room temp. The mild reaction conditions employed allow the efficient synthesis of a variety of cyclic carbonates that would be less conveniently obtained using reported methods. Thus, cyclization of the propargyl carbonates I (R, R1 = Me, H; Me, Me; Me, Et) in CH2Cl2 contg. (Ph3P)AuN(SO2CF3)2 gave 85-98% methylenedioxolanones II. Variability in the structure of the final product has been obsd. and is significantly dependent on the nature of the substituent attached to the alkyne moiety. .