Synthetic Approach to Benzocyclobutenones Using Visible Light and a Phosphonate Auxiliary
摘要:
Reported herein is a two-step procedure to synthesize benzocyclobutenones from (o-alkylbenzoyl)-phosphonates. It consists of a visible-light-driven cyclization reaction forming phosphonate-substituted benzocyclobutenols and subsequent elimination reaction of the H-phosphonate, which assumes a key role as the recyclable auxiliary. A wide variety of functionalized benzocyclobutenones, which include those difficult to synthesize by conventional methods, are efficiently synthesized.
rapid and total synthesis of a tricyclo[6.2.0.0]deca-1,5,7-triene-3,10-dione 7b is described. Its synthesis involves the [2+2] cycloaddition of a benzyne to 2-methylene-1,3-dioxepane followed by hydrolysis to the corresponding ketone. This reaction is totally regioselective and the real structure of the molecule is given thanks notably to the X-ray crystalstructure of the intermediate benzo-bis-cyclobutene
A method of forming a layer of an electronic device, for example an organic light-emitting device, the method comprising the step of depositing a precursor layer comprising a compound of formula (I) and reacting the compound of formula (I) in a ring-opening addition reaction:
Core-(Reactive Group)
n
(I)
wherein Core is a non-polymeric core group; and each Reactive Group, which may be the same or different in each occurrence, is a group of formula (II):
wherein Sp
1
independently in each occurrence represents a spacer group; w independently in each occurrence is 0 or 1; Ar in each occurrence independently represents an aryl or heteroaryl group; R
1
in each occurrence independently represents H or a substituent, with the proviso that at least one R
1
is a substituent; n is at least 1; and * is a point of attachment of the group of formula (II) to the Core; and wherein the compound of formula (I) reacts with itself or with a non-polymeric co-reactant.
POLYMERS, MONOMERS AND METHODS OF FORMING POLYMERS
申请人:Humphries Martin J.
公开号:US20140235800A1
公开(公告)日:2014-08-21
A method of forming a crosslinked polymer comprising the step of reacting a crosslinkable group in the presence of a polymer, wherein: the crosslinkable group comprises a core unit substituted with at least one crosslinkable unit of formula (I): the crosslinkable group is bound to the polymer or is a crosslinkable compound mixed with the polymer; Ar is aryl or heteroaryl which may be unsubstituted or substituted with one or more substituents independently selected from monovalent substituents and a divalent linking group linking the unit of formula (I) to the core unit; and R is independently in each occurrence H, a monovalent substituent or a divalent linking group linking the unit of formula (I) to the core unit, with the proviso that at least one R is not H.
A method of forming a layer of an electronic device, for example an organic light-emitting device, the method comprising the step of depositing a precursor layer comprising a compound of formula (I) and reacting the compound of formula (I) in a ring-opening addition reaction:
Core-(Reactive Group)n (I)
wherein Core is a non-polymeric core group; and each Reactive Group, which may be the same or different in each occurrence, is a group of formula (II):
wherein Sp1 independently in each occurrence represents a spacer group; w independently in each occurrence is 0 or 1; Ar in each occurrence independently represents an aryl or heteroaryl group; R1 in each occurrence independently represents H or a substituent, with the proviso that at least one R1 is a substituent; n is at least 1; and * is a point of attachment of the group of formula (II) to the Core; and wherein the compound of formula (I) reacts with itself or with a non-polymeric co-reactant.