Light-controlled bioorthogonal tetrazine ligation

A compound having the formula:

• wherein
• Ring A is a photolabel moiety;
• L1 is a bond or covalent linker;
• L2 is a bond or covalent linker;
• L3 is a bond, substituted or unsubstituted alkylene, or substituted or unsubstituted heteroalkylene;
• R1 is hydrogen, halogen, —CX13, —CHX12, —CH2X1, —OCX13, —OCH2X1, —OCHX12, —CN, —SOn1R1D, SOv1NR1AR1B, —NR1CNR1AR1B, —ONR1AR1B, —NHC(O)NR1CNR1AR1B, —NHC(O)NR1AR1B, —N(O)m1, —NR1AR1B, —C(O)R1C, —C(O)OR1C, —C(O)NR1AR1B, —OR1D, —SR1D, —NR1ASO2R1D, —NR1AC(O)R1C, —NR1AC(O)OR1C, —NR1AOR1C, —SF5, —N3, —OP(O)(OR1C)(OR1D), substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or a biomolecular moiety;
• R2 is hydrogen, halogen, —CX23, —CHX22, —CH2X2, —OCX23, —OCH2X2, —OCHX22, —CN, —SOn2R2D, SOv2NR2AR2B, —NR2CNR2AR2B, —ONR2AR2B, —NHC(O)NR2CNR2AR2B, —NHC(O)NR2AR2B, —N(O)m2, —NR2AR2B, —C(O)R2C, —C(O)OR2C, —C(O)NR2AR2B, —OR2D, —SR2D, —NR2ASO2R2D, —NR2AC(O)R2C, —NR2AC(O)OR2C, —NR2AOR2C, —SF5, —N3, —OP(O)(OR2C)(OR2D), substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or a biomolecular moiety;
• R1A, R1B, R1C, R1D, R2A, R2B, R2C, and R2D are independently hydrogen, halogen, —CCl3, —CBr3, —CF3, —CI3, —CH2Cl, —CH2Br, —CH2F, —CH2I, —CHCl2, —CHBr2, —CHF2, —CHI2, —CN, —OH, —NH2, —COOH, —CONH2, —NO2, —SH, —SO3H, —OSO3H, —SO2NH2, —NHNH2, —ONH2, —NHC(O)NHNH2, —NHC(O)NH2, —NHSO2H, —NHC(O)H, —NHC(O)OH, —NHOH, —OCCl3, —OCBr3, —OCF3, —OCI3, —OCH2Cl, —OCH2Br, —OCH2F, —OCH2I, —OCHCl2, —OCHBr2, —OCHF2, —OCHI2, —N3, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;
• R1A and R1B substituents bonded to the same nitrogen atom may optionally be joined to form a substituted or unsubstituted heterocycloalkyl or substituted or unsubstituted heteroaryl;
• R2A and R2B substituents bonded to the same nitrogen atom may optionally be joined to form a substituted or unsubstituted heterocycloalkyl or substituted or unsubstituted heteroaryl;
• X1 and X2 are independently —F, —Cl, —Br, or —I;
• n1 and n2 are independently an integer from 0 to 4;
• and
• m1, m2, v1, and v2 are independently 1 or 2.