Peripherally acting cannabinoid agonist compounds, pharmaceutical compositions, and methods of using them are presented.

A process for the preparation of a compound of formula (V):

##STR00001## comprising at least the step of reacting a compound of formula (VI)

##STR00002## with a compound (VII)

##STR00003## wherein; R.sub.2 is hydrogen or a C1-C20 hydrocarbyl radical provided that at least one R.sub.2 is not hydrogen; R.sub.5 is hydrogen or a C1-20 hydrocarbyl group optionally containing one or more heteroatoms from groups 14-16; R.sub.6 is hydrogen or a C1-20 hydrocarbyl group optionally containing one or more heteroatoms from groups 14-16; n is 1, 2 or 3; each R.sub.8 is a C1-20 hydrocarbyl group; and Hal is a halide; in the presence of a nickel imidazolidin-2-ylidene compound.

A process for the preparation of a compound of formula (V):

##STR00001## comprising at least the step of reacting a compound of formula (VI)

##STR00002## with a compound (VII)

##STR00003## wherein; R.sub.2 is hydrogen or a C1-C20 hydrocarbyl radical provided that at least one R.sub.2 is not hydrogen; R.sub.5 is hydrogen or a C1-20 hydrocarbyl group optionally containing one or more heteroatoms from groups 14-16; R.sub.6 is hydrogen or a C1-20 hydrocarbyl group optionally containing one or more heteroatoms from groups 14-16; n is 1, 2 or 3; each R.sub.8 is a C1-20 hydrocarbyl group; and Hal is a halide; in the presence of a nickel imidazolidin-2-ylidene compound.

The present application relates to a substituted benzanthracene compound of a formula (I) or (II). The application furthermore relates to an electronic device which comprises the said benzanthracene compound.

The present invention relates to a new process for the synthesis of 2,3,4,5,6,7-substituted indenes, which are useful precursors for the formation of certain ansa-metallocene catalysts.

The present invention relates to a new process for the synthesis of 2,3,4,5,6,7-substituted indenes, which are useful precursors for the formation of certain ansa-metallocene catalysts.

An organic material for an organic light emitting diode (OLED) display, and an OLED display are provided, and the organic material includes an anthracene derivative includes at least deuterium.

A ligand of formula (I) ##STR00001## wherein L is a divalent bridge selected from R.sub.2C, R.sub.2CCR.sub.2, R.sub.2Si, R.sub.2SiSiR.sub.2, R.sub.2Ge, wherein each R is independently a hydrogen atom, C.sub.1-20-hydrocarbyl, tri(C.sub.1-20-alkyl)silyl, C.sub.6-20-aryl, C.sub.7-20-arylalkyl or C.sub.7-20-alkylaryl; R.sup.2 and R.sup.2 are each independently a C.sub.1-20 hydrocarbyl radical; R.sup.5 is a C.sub.1-20 hydrocarbyl group; R.sup.6, R.sup.6, R.sup.7 and R.sup.7 are each independently hydrogen or a C.sub.1-20 hydrocarbyl group; Ar and Ar are independently an aryl or heteroaryl group having up to 20 carbon atoms; each R.sup.1 is a C.sub.1-20 hydrocarbyl group or two R.sup.1 groups on adjacent carbon atoms taken together can form a fused 5 or 6 membered non aromatic ring with the Ar group; and each R.sup.4 is a C.sub.1-20 hydrocarbyl group; and the dotted lines represent a double bond present in between carbons 1 and 2 or 2 and 3 of the indenyl ring.

A ligand of formula (I) ##STR00001## wherein L is a divalent bridge selected from R.sub.2C, R.sub.2CCR.sub.2, R.sub.2Si, R.sub.2SiSiR.sub.2, R.sub.2Ge, wherein each R is independently a hydrogen atom, C.sub.1-20-hydrocarbyl, tri(C.sub.1-20-alkyl)silyl, C.sub.6-20-aryl, C.sub.7-20-arylalkyl or C.sub.7-20-alkylaryl; R.sup.2 and R.sup.2 are each independently a C.sub.1-20 hydrocarbyl radical; R.sup.5 is a C.sub.1-20 hydrocarbyl group; R.sup.6, R.sup.6, R.sup.7 and R.sup.7 are each independently hydrogen or a C.sub.1-20 hydrocarbyl group; Ar and Ar are independently an aryl or heteroaryl group having up to 20 carbon atoms; each R.sup.1 is a C.sub.1-20 hydrocarbyl group or two R.sup.1 groups on adjacent carbon atoms taken together can form a fused 5 or 6 membered non aromatic ring with the Ar group; and each R.sup.4 is a C.sub.1-20 hydrocarbyl group; and the dotted lines represent a double bond present in between carbons 1 and 2 or 2 and 3 of the indenyl ring.

A catalyst in solid particulate form free from an external carrier material comprising (I) a complex of formula (I) ##STR00001## wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from R.sub.2C, R.sub.2CCR.sub.2, R.sub.2Si, R.sub.2SiSiR.sub.2, R.sub.2Ge, wherein each R is independently a hydrogen atom, C1-C20-alkyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each R.sub.2 is independently hydrogen or a C1-C20 hydrocarbyl radical provided that at least one R.sub.2 is not hydrogen; each R.sub.5 is independently hydrogen or a C1-20 hydrocarbyl group optionally containing one or more heteroatoms from groups 14-16; each R.sub.6 is independently hydrogen or a C1-20 hydrocarbyl group optionally containing one or more heteroatoms from groups 14-16; each n is independently 1, 2 or 3; and each R.sub.8 is a C1-20 hydrocarbyl group; and (ii) a cocatalyst comprising a compound of a group 13 metal, e.g. Al or boron.