✦ LIBER ✦

Synthesis of some polycyclic quinones through 1-methoxycyclohexa-1,3-dienes

✍ Scribed by A.J. Birch; V.H. Powell

Publisher: Elsevier Science
Year: 1970
Tongue: French
Weight: 187 KB
Volume: 11
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)98504-1

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

A catalytic conversion of 1-methoxycyclo

A catalytic conversion of 1-methoxycyclohexa-1,4-dienes into 1-methoxycyclohexa-1,3-dienes

✍ A.J. Birch; K.P. Dastur 📂 Article 📅 1972 🏛 Elsevier Science 🌐 French ⚖ 89 KB

The first equilibration of l-methoxycyclohexa-1.4-dienes, readily available from metalassmnia reduction of anisoles. 1 with the more stable cyclohexa-1,3-dienes, was with potassamide in -nia.l This, and other basic reagents in DHSO. have experimental disadvantages.

Transition metal complexes in organic sy

Transition metal complexes in organic synthesis, part 50. Asymmetric catalytic complexation of 1-methoxycyclohexa-1,3-diene by the tricarbonyliron fragment using amino acid-derived 1-azabuta-1,3-dienes

✍ Hans-Joachim Knölker; Daniela Herzberg 📂 Article 📅 1999 🏛 Elsevier Science 🌐 French ⚖ 145 KB

L-Amino acid esters as chiral auxiliaries in the asymmetric complexation of 1-methoxycyclohexa-l,3-diene with pentacarbonyliron afford the R-enantiomer of the corresponding planar chiral tricarbonylimn complex in up to 24% ee.

Synthesis of 1-nitro-1,3-dienes via nitr

Synthesis of 1-nitro-1,3-dienes via nitrotrifluoroacetoxylation of 1,3-dienes

✍ A. Jon Bloom; John M. Mellor 📂 Article 📅 1986 🏛 Elsevier Science 🌐 French ⚖ 219 KB

Nitrotrifluoroacetate adducts, obtained from 1,3-dienes by reaction with ammonium nitrate in trifluoroacetic anhydride, readily eliminate to afford l-nitro-1,3-dienes in high yield.

Regiospecific addition of methoxycyclohe

Regiospecific addition of methoxycyclohexa-1,3-dienes to 2-methoxy-1,4-benzoquinone. Application to the synthesis of 3-methoxy-7-methyljuglone and α-caryopterone.

✍ Robin G.F. Giles; Gregory H.P. Roos 📂 Article 📅 1975 🏛 Elsevier Science 🌐 French ⚖ 106 KB

Nucleophilic attack on 1,4-benzoquinone leads in general to 2,5-disubstituted 1,4benzoquinones'. For example, the action of methanol on benzoquinone, in the presence of zinc n

Selenosulfonation of 1,3-dienes: One-pot

Selenosulfonation of 1,3-dienes: One-pot synthesis of 2-(phenylsulfonyl)-1,3-dienes

✍ Jan-E. Bäckvall; Carmen Nájera; Miguel Yus 📂 Article 📅 1988 🏛 Elsevier Science 🌐 French ⚖ 228 KB

A one-pot procedure for the transformation of a 1,3-diene into the corresponding 2-(phenylsulfonyl)-1,3-diene was developed. The reaction involves a 1,2-selenosulfonation-oxidation sequence. 2-( Phenylsulfonyl)-1,3-dienes have recently been shown to be versatile synthons in organic transformations.

Organometallics in organic synthesis:tri

Organometallics in organic synthesis:tricarbonyl-(3-methoxycyclohexa-2,4-dien-1-yl)-iron(1+). A synthetic equivalent of the C-5 cation of cyclohexenone.

✍ Lawrence F. Kelly; Peter Dahler; Acharan S. Narula; Arthur J. Birch 📂 Article 📅 1981 🏛 Elsevier Science 🌐 French ⚖ 208 KB

## Swrnnary: ~icarbonyZ-I3-methoxycyctohe~-2,4-dien-l-yl)-iro~l~l+~ PFcfl-) 2 reacts with a variety of nucleophiles to give 5-substi-&ted cyclohex-2-enones. 2 is sham to be a useful precursor for a convergent synthesis of 5-substituted cyclohcx-2-enones and to be synthetically equivalent to the 5