A Pd(II)/Brønsted acid catalyzed migratory ring expansion for the synthesis of indene derivatives possessing a stereogenic spirocyclic carbon center was developed. This transformation is believed to mechanistically proceed via enantioselective allylic C-H activation with concomitant semipinacol ring expansion to the nascent π-allylpalladium species. Enantioselectivities as high as 98% ee were a...

A method to prepare highly conjugated indenes efficiently by iron(III) chloride-catalysed dimerisation of trisubstituted propargylic alcohols under very mild conditions at room temperature is described. The reactions are rapid and operationally straightforward, giving the indene products in good yields and regioselectivity.

An efficient and direct procedure for the synthesis of benzo[h]-indeno[1,2-b]-quinoline derivatives has been described. The procedure employs a three-component condensation reaction in one-pot using 2H-indene-1, 3-dione, naphthalen-1-amine,and aldehydes in the presence of catalytic amount of L-prolinein aqueous media.

an efficient and direct procedure for the synthesis of benzo[h]-indeno[1,2-b]-quinoline derivatives has been described. the procedure employs a three-component condensation reaction in one-pot using 2h-indene-1, 3-dione, naphthalen-1-amine,and aldehydes in the presence of catalytic amount of l-prolinein aqueous media.

زۆربەى لێکۆڵينەوەکان کە لە سەر ناوچەى ئاکرێ نووسراون زیاتر لایەنەکانى سیاسى و کارگێڕى سەربازى دەگرێتەوە, کاتێکدا بوارە گرنگەکانى ديكه‌ى ژیان فەرامۆش کراون، بە تایبەتى لایەنى ئابوورى نێویشيدا بوارى کشتوکاڵ زەورى زار، پەیوەندى راستەوخۆى لەگەڵ ژیانى مروڤدا هەیە, سەرەڕاى ئەمەش لەچاو کەمتر بایەخى پێ دراوە, بۆیە پێمان باش بوو لەسەر ئەم بابەتە بنووسين. ئامانجى سەرەکیشمان ئەوەیە بەم لێکۆڵینەوە لایەنێکى...

Herein we report on the charge transport properties of spin-coated thin films of an n-type fullerene derivative, i.e. the indene-C60 bis-adduct (ICBA). In particular, the effects of annealing temperature and duration as well as surface functionalization are explored. Electron mobilities approaching 0.1 cm(2) V(-1) s(-1) are reported.

New examples of ansa-titanocenes derived from 1,2-bis(2-indenyl)ethane have been prepared. The titanium-mediated reductive coupling of 2-(hydroxymethyl)indenes provided a convenient method for substrate dimerization. Alkyl substitution of the indene ring at C(3) improved the regioselectivity of the reductive coupling to provide the ethylene bis(2-indenyl)ansa-ligands in 29–62% yield.

In the title compound, C(16)H(11)ClO, the dihedral angle between the almost planar dihydro-indene ring system (r.m.s. deviation = 0.009 Å) and the chloro-benzene ring is 3.51 (14)°. In the crystal, mol-ecules are connected by C-H⋯O and weak C-H⋯Cl inter-actions, forming infinite layers parallel to (101).

In the title compound, C(18)H(17)NO, the dihydro-indene ring system is approximately planar, with a maximum deviation of 0.041 (2) Å. This ring system is almost coplanar with the benzene ring, making a dihedral angle of 5.22 (9)°. In the crystal, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains along the b axis.

A facile and highly regioselective Pd-catalyzed oxidative coupling of N-tosylhydrazones providing efficient access to 2,3-disubstituted-1,3-butadienes has been developed. This process features readily available starting materials and mild reaction conditions. Further transformations of the obtained dibranched 1,3-dienes, through Diels-Alder reactions and indene synthesis, are also demonstrated,...