New furanone compounds have anti-inflammatory, immunosuppresive and anti-proliferative activity and are useful in treating psoriasis and modifying calcium homeostasis. A compound of the invention is 4-[3,6-dihydro-6-hydroxy-5-(3-phenylpropyl)-2H-pyran-2-yl]-5-hydroxy-2-(5H )-furanone.
Advances in the chemistry of heterodiene metal complexes
作者:K. Vrieze
DOI:10.1016/0022-328x(86)84067-0
日期:1986.2
This review surveys recent advances in our research on the coordinationchemistry of α-diimine metal compounds. Emphasis is placed on the novel developments in this field. Related work dealing with metal enimine compounds is also outlined.
One-pot synthesis of γ-lactams in a reaction cascade from α,β-unsaturated imines, CO and ethylene catalysed by Ru3(CO)12†
作者:Daniel Berger、Wolfgang Imhof
DOI:10.1039/a903266e
日期:——
The formation of 1,3-dihydropyrrol-2-one derivatives in moderate to excellent yields may be achieved by sequential insertion of CO and ethylene into CâH bonds of 1-azadienes catalysed by Ru3(CO)12; thus two new CâC bonds and a new center of asymmetry at C3 are produced via an intramolecular aldol condensation-like cyclization.
Ruthenium Catalyzed One-pot Synthesis of Dihydro-pyrrol-2-one Derivatives from α,β-unsaturated Imines, Carbon Monoxide and Ethylene
作者:Daniel Berger、Wolfgang Imhof
DOI:10.1016/s0040-4020(00)00118-6
日期:2000.3
Ru3(CO)12 as a precatalyst induces a catalytic C–C coupling reaction of α,β-unsaturated imines with CO to yield imines with an aldehyde function in β-position with respect to the C–N double bond. An intramolecular cyclization reaction takes place via the nucleophilicattack of the imine nitrogen towards the carbonyl carbon atom building up a pyrrol-2-one system. A second ruthenium catalyzed C–C coupling
使用Ru 3(CO)12作为预催化剂可引起α,β-不饱和亚胺与CO的催化C–C偶联反应,生成相对于C–N双键在β位具有醛功能的亚胺。分子内环化反应是通过亚胺氮对羰基碳原子的亲核攻击而形成的吡咯-2-酮系统而发生的。第二步钌催化的C–C偶联反应导致一个乙烯分子正式插入邻位吡咯-2-一的C–H键中相对于酮基的位置。通过这种选择性反应,分别衍生自肉桂醛或巴豆醛的级联亚胺产生1,3-二氢-吡咯-2-酮衍生物。从β-萘基亚胺开始的类似反应产生作为新型杂环化合物的9b-乙基-4-丙酰基-2,9b-二氢-苯并[ e ]异吲哚-1-酮衍生物。
Reactions of monoazadienes with metal carbonyl complexes III. Thermal conversion of n-alkyl-(e)-crotonaldimine with ru3(co)12 to σ-n,μ2-η3-allyl and μ2-η3-azaallyl bonded six electron fragments coordinated to a hexacarbonyl diruthenium unit. X-ray single crystal structure determinations of ru2(co)6{σ-n,μ2-η3-ch2cc(h)c(h)nc4h9-t} and ru2(co)6{μ2-η3-c2h5cc(h)nc4h9−}
complexes Ru2(CO)6L that arise from thermal reactions of monoazadienes (E)-CH3C(H)C(H)C(H)NR (1); (R = t−C4H9, i−C3H7, c−C6H11) with Ru3(CO)12 are reported. The bonding of the six-electron donating organic fragments in the complexes Ru2(CO)6σ-N,μ2-η3-CH2CC(H)C(H)NC4H9−t} (4a) and Ru2(CO)6C2H5CC(H) NC4H9−t} (5a) is described on the basis of their X-ray single crystalstructure determinations
由单氮二烯(E)-CH 3 C(H)C(H)C(H)NR(1)的热反应产生的两个络合物Ru 2(CO)6 L ;报道了具有Ru 3(CO)12的(R =t C 4 H 9,i C 3 H 7,c C 6 H 11)。六电子在复合性有机片段的Ru的接合2(CO)6 σ-N,μ 2 -η 3 -CH 2 CC(H)C(H)NC 4 ħ 9-t }(图4a)和Ru 2(CO)6 C 2 H ^ 5 CC(H)NC 4 ħ 9 -t }(图5a)它们的X射线单晶结构测定的基础上进行说明。在化合物4a中的有机配位体是σ-N,μ 2 -η 3配位的且含有一个扭曲η 3 -烯丙基片段桥接两个的Ru(CO)3个部分。化合物5a中设有μ 2 -η 3 -azaallyl二价阴离子桥接在钌的钌中心2(CO)6核。讨论了形成4a和5a的可能途径,分别涉及脱氢和1,2-H转移。